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Rob and Jesse talk with John Henry Harris, the cofounder and CEO of Harbinger Motors.

You might not think that often about medium-duty trucks, but they’re all around you: ambulances, UPS and FedEx delivery trucks, school buses. And although they make up a relatively small share of vehicles on the road, they generate an outsized amount of carbon pollution. They’re also a surprisingly ripe target for electrification, because so many medium-duty trucks drive fewer than 150 miles a day.
On this week’s episode of Shift Key, Rob and Jesse talk with John Henry Harris, the cofounder and CEO of Harbinger Motors. Harbinger is a Los Angeles-based startup that sells electric and hybrid chassis for medium-duty vehicles, such as delivery vans, moving trucks, and ambulances.
Rob, John, and Jesse chat about why medium-duty trucking is unlike any other vehicle segment, how to design an electric truck to last 20 years, and how President Trump’s tariffs are already stalling out manufacturing firms. Shift Key is hosted by Jesse Jenkins, a professor of energy systems engineering at Princeton University, and Robinson Meyer, Heatmap’s executive editor.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, YouTube, or wherever you get your podcasts.
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Here is an excerpt from our conversation:
Robinson Meyer: What is it like building a final assembly plant — a U.S. factory — in this moment?
John Harris: I would say lots of people talk about how excited they are about U.S. manufacturing, but that's very different than putting their money where their mouth is. Building a final assembly line, like we have — our team here is really good, that they made it feel not that hard. The challenge is the whole supply chain.
If we look at what we build here in-house at Harbinger, we have a final assembly line where we bolt parts together to make chassis. We also have two sub-component assembly lines where we take copper and make motors, and where we take cells and make batteries. All three of those lines work pretty well. We're pumping out chassis, and they roll out the door, and we sell them to people, which is great. But it’s all the stuff that goes into those, that's the most challenging. There's a lot of trade policy at certain hours of the day, on certain days of the week — depending on when we check — that is theoretically supposed to encourage us manufacturing.
But it's really not because of the volatility. It costs us an enormous amount to build the supply chain, to feed these lines. And when we have volatile trade policy, our reaction, and everyone else's reaction, is to just pause. It’s not to spend more money on U.S. manufacturing, because we were already doing that. We were spending a lot on U.S. manufacturing as part of our core approach to manufacturing.
The latest trade policy has caused us to spend less money on U.S. manufacturing — not more, because we're unclear on what is the demand environment going to be, what is the policy going to be next week? We were getting ready to make major investments to take certain manufacturing tasks in our supply chain out of China and move them to Mexico, for example. Now we’re not. We were getting ready to invest in certain kinds of automation to do things in house, and now we're waiting. So the volatility is dramatically shrinking investment in US manufacturing, including ours.
Meyer: And can you just explain, why did you make that decision to pause investment and how does trade policy affect that decision?
Harris: When we had 25% tariffs on China, if we take content out of China and move it to Mexico, we break even — if that. We might still end up underwater. That's because there's better automation in China. There's much higher labor productivity. And — this one is always shocking to people — there’s lower logistics costs. When we move stuff from Shenzhen to our factory, in many cases it costs us less than moving shipments from Monterey.
Mentioned:
CalStart’s data on medium-duty electric trucks deployed in the U.S.
Here’s the chart that John showed Rob and Jesse:

It draws on data from Bloomberg in China, the ICCT, and the Calstart ZET Dashboard in the United States.
Jesse’s case for EVs with gas tanks — which are called extended range electric vehicles
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The offshore wind industry is now five-for-five against Trump’s orders to halt construction.
District Judge Royce Lamberth ruled Monday morning that Orsted could resume construction of the Sunrise Wind project off the coast of New England. This wasn’t a surprise considering Lamberth has previously ruled not once but twice in favor of Orsted continuing work on a separate offshore energy project, Revolution Wind, and the legal arguments were the same. It also comes after the Trump administration lost three other cases over these stop work orders, which were issued without warning shortly before Christmas on questionable national security grounds.
The stakes in this case couldn’t be more clear. If the government were to somehow prevail in one or more of these cases, it would potentially allow agencies to shut down any construction project underway using even the vaguest of national security claims. But as I have previously explained, that behavior is often a textbook violation of federal administrative procedure law.
Whether the Trump administration will appeal any of these rulings is now the most urgent question. There have been no indications that the administration intends to do so, and a review of the federal dockets indicates nothing has been filed yet.
The Department of Justice declined to comment on whether it would seek to appeal any or all of the rulings.
Editor’s note: This story has been updated to reflect that the administration declined to comment.
The Central American country is the now the Americas’ EV leader.
The cars that sit atop the list of best-selling electric vehicles in the world wouldn’t surprise Americans. Through the first three quarters of 2025, Tesla’s Model Y and Model 3 were the number one and two EVs in the world, just as they are in the United States. But after that, the names begin to get a little less familiar.
In America, the top EVs not made by Tesla include battery-powered efforts by legacy car companies like Chevy, Ford, and Hyundai. Global sales figures, however, demonstrate the remarkable reach of upstart Chinese companies selling electric cars not only in China, but also in up and coming car markets around the world. The worldwide top 10 is dominated by EVs by Chinese manufacturers Wuling, Xiaomi, and BYD, with nary a Western carmaker in sight.
With those vehicles still absent from the U.S., the only way to sample how the rest of the world drives is to head abroad and hop in, which I had the chance to do on a recent trip to Costa Rica. To visit here is to see the car market that may be coming soon to many parts of the world. Fully electric vehicles made up around 15% of new sales in Costa Rica in 2024, compared to 8% in the U.S., making it the Americas’ EV adoption leader. Tesla does not operate here, so Chinese brands populate the country’s top 10, as they do in burgeoning EV markets throughout Latin America.
Chinese juggernaut BYD sells plenty of cars in Costa Rica, but doesn’t dominate the market entirely like it does in some parts of the world. Chinese EV-makers Chery, Dongfeng, and Geely sell lots of very affordable cars here. It doesn’t take long in one of these vehicles to see what has Western auto companies so worried. If Americans could buy one of these Chinese-made EVs at the price they sell elsewhere, they absolutely would.
During a November trip, my family stayed with friends who had temporarily relocated to the outskirts of the Costa Rican capital city — and who had traded the two Teslas they drove in the San Francisco Bay Area for a BYD Song Plus, an all-electric crossover with more than 310 miles of range.
On the inside, the Song feels close to the minimalist, touchscreen-driven approach. There are a handful of physical buttons on the steering wheel, but nowhere near the overwhelming array inside one of the electric offerings from the legacy carmakers. The interface in the big center touchscreen isn’t quite as polished as that of a Rivian or Tesla, and you might find yourself preferring to use Waze through Apple CarPlay to find your way around as opposed to the native software. But the setup is functional, clean, and honestly pretty great for a car that could be had for as little as $20,000.
The BYD has plenty of zip when you hit the accelerator, but is sufficiently judicious in its power consumption to get 300-plus miles of range on a relatively small 71.8 kilowatt-hour battery. The ride is cushy enough to endure the endless potholes caused by Costa Rica’s rainy climate. The interior feels plenty luxurious for that price, with cushy materials and a full array of tech features including wireless phone charging and using your phone as the key. In sum, the Song Plus feels modern and fresh like you’d expect from an EV startup, but at a cost that halves what you’d pay for a Tesla in the U.S.
Song Plus charges at just 140 kilowatts, slower than the state of the art in EVs like those from Hyundai or Tesla, which means it takes nearly half an hour to charge from 30% to 80% — but then again, if you’re not relying on public fast chargers to get from here to there, that’s a pretty minor inconvenience.
Costa Rica is known for being among the world’s most nature-friendly nations, having built a thriving eco-tourism industry for travelers who want to see its populations of tropical birds, white-faced capuchin monkeys, and goofy sloths. The whole nation is smaller than the state of West Virginia, meaning that drivers are generally not going on American-style road trips that span hundreds of miles and requiring visits to public fast charging. Instead, most charging is done at home and many trips can be accomplished on a single charge. The tropical warmth means that the performance ding batteries suffer in the cold isn’t an issue.
These favorable factors, plus incentives such as free parking and an exemption from import taxes, led Costa Rica to surge past the U.S. and Canada in recent years to claim the title of top EV country in the Americas.
To putter around in pursuit of crocs and quetzals, then, is to drive amongst an alternate universe of electric cars compared to the one in Los Angeles — small, cheap EV crossovers and even pickup trucks that would upend the American car market if they were allowed to come stateside and undercut our car companies. The simplest way to see them? Book a ticket to San Jose.
Current conditions: A bomb cyclone dumped as much as 16 inches of snow on North Carolina, and more snow could come by midweek • Tampa, Florida, is seeing rare flurries, putting embattled citrus crops at risk • Sri Lanka is being inundated by intense thunderstorms as temperatures surge near 90 degrees Fahrenheit.
As the bomb cyclone bore down on the Southeastern United States with Arctic chills, Duke Energy sent out messages to its millions of customers in Florida and the Carolinas last night asking households to voluntarily turn down the power between certain hours on Monday to avoid blackouts on the grid. “Frigid temperatures are driving extremely high energy demand,” the utility said in a statement to its ratepayers in Florida. “As Florida continues to experience the coldest air in the state since 2018, Duke Energy is asking all customers to voluntarily reduce their energy use” from 5 a.m. to 9 a.m. EST on Monday. The company issued an identical message to customers in the Carolinas, except the window stretched from 4 a.m. to 10 a.m.
“Put simply, cold temperatures stress the grid,” my colleague Jeva Lange and Matthew Zeitlin wrote last week. “That’s because cold can affect the performance of electricity generators as well as the distribution and production of natural gas, the most commonly used grid fuel. And the longer the grid has to operate under these difficult conditions, the more fragile it gets.”
The Department of Energy just proposed exempting advanced nuclear reactors from carrying out reviews under the National Environmental Policy Act, marking yet another step the Trump administration is taking to speed up deployment of new atomic power technologies. Past environmental assessments have demonstrated “that any hazardous waste, radioactive waste, or spent nuclear fuel generated by the project can be managed” and “do not significantly affect the quality of the human environment.” The new categorical exclusion takes effect today, but the agency is taking public comments for the next 30 days and said it may revise the policy depending on the testimony it receives.
When Matthew wrote “everyone wants nuclear now” back in 2024, he was referring to the suddenly ubiquitous popularity of a once taboo energy source. But if you read those four words to instead convey a sense of urgency, you’d be accurately describing the state of affairs in 2026 as electricity demand rapidly eclipses incoming supply, as I wrote last week.
A Canadian company developing what it claims is one of the continent’s first major new sources of alumina, the processed version of bauxite needed to make aluminum, is set to move ahead with the project. The privately-owned Canadian Energy Metals said late last week that the $6.3 billion project contains an estimated 6.8 billion metric tons of alumina within a 230-square-mile stretch of the Prairie province of Saskatchewan. Canada ranks among the top global producers of primary aluminum, but its refineries and smelters rely on imports. The discovery the startup confirmed appears to be large enough to represent more than a third of known alumina globally. “We believe it’s very significant,” Christopher Hopkins, the chief executive at CEM, told The Wall Street Journal.
The Trump administration, meanwhile, is taking stock of the value of friends in the fight to find critical minerals outside of China’s control. Trump officials are trying to rally consensus with allies on a pricing mechanism to boost long-term investments in mineral refining and mining. The effort is set to take place this week during meetings with dozens of foreign ministers in Washington. Under Secretary of State for Economic Affairs Jacob Helberg told Bloomberg he expects a lot of “momentum and excitement” toward “agreeing on a price mechanism that we can all coordinate together on in order to ensure price stability for people in the mineral refining and extraction business.”
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More than 200 people were killed last week when the Rubaya coltan mine in eastern Democratic Republic of the Congo collapsed. Rubaya produces roughly 15% of the world’s coltan, a processed metal needed for electric vehicle batteries, pipelines, and gas turbines. The site, which Reuters said is staffed with locals who dig manually for a few dollars per day, has been under the control of the M23 rebel group since 2024. The actual death toll, which hasn’t been updated since its initial count last week, is likely even higher. The disaster offers a grim reminder of the brutal conditions in the mineral supply chains needed for the energy transition.

Things were already looking bad for Drax as the wood pellet energy giant faced mounting scrutiny over its pollution. Last week, I told you that Japan, one of the world’s largest markets burning wood pellets for electricity and heat, was souring on the energy source. Now a senior policy specialist at the company’s flagship biomass power station has spoken out about the accuracy of public statements the company made about where it was sourcing its wood. In theory, biomass energy could be low carbon if it uses wood that would otherwise rot and release the carbon trapped inside. But investigations into Drax previously found that the company was felling old-growth forests in the U.S. and Canada, the types of mature trees that absorb the most carbon through photosynthesis, calling its claims of carbon neutrality into question. Drax insisted that didn’t have even licenses to extract trees from such woodlands at all, meaning the company wasn't harvesting them, but the senior employee said that wasn’t true.
Past studies of polar bear of Svalbard found that the population declined when sea ice disappeared. But new research in the journal Scientific Reports based on hundreds of specimens of Ursus maritimus, discovered that the physical conditions of the bear population on the Norwegian Arctic island improved despite sea ice losses. Without sea ice, the bears were previously thought to struggle to hunt and grow thinner. But the authors suggested that the Svalbard bears may be recovering as populations of land-based prey that were previously over-hunted by humans, such as reindeer and walrus, returns.