Keller Strother got his first Tesla, a Roadster, in 2011. He still has it, though his garage now includes two more Teslas and a vintage Porsche 911 that recently had its gas-burning guts swapped out for a battery and electric motors.
In a warming world, where roughly one quarter of Americans are keen to buy an electric vehicle, Strother has four of them.
“The technology is so viable and it’s such a better solution,” he says. “And I’ve always been a little obsessed with having the right tool for a job.”
EV adoption is finally ramping up in the U.S. But what the fever line doesn’t show is that it’s lumpy. A large share of battery-powered cars are being bought by households that already own an EV, or two or three for that matter. The EV early adopter has given way to the superuser or, some might say, the hoarder. And despite their good intentions, these double-dippers may unwittingly be shrinking the climate benefits their cars can offer.
“A, the wrong people are buying these cars,” says Ashley Nunes, a Harvard economist studying this dynamic. “And B, the way those people are using these cars makes it very difficult for them to deliver an emissions advantage.”
In a recent Bloomberg survey of EV drivers, 14% of respondents said they owned more than one battery-powered vehicle, and 6% of those surveyed had three or more. That doubling-down dynamic is clear in sales data, too. Some 26% of EV buyers in the second quarter either traded their used electric car for a new one or simply added another to their garage, according to Edmunds. Another 9% of recent EV buyers were already driving a hybrid. Scientists, politicians and auto executives have championed electric cars to replace gas-burning vehicles, but much of the time that’s not what’s happening — at least not yet.
The repetitive buying isn’t all bad. It’s a validation of the technology, a clear pattern that, when familiar with both options and given the choice, many prefer to drive electric. It also suggests that the typical reservations among the EV-curious — namely range anxiety and charging confusion — fade quickly with use.
“It speaks to a level of excitement,” says Berkeley economist Lucas Davis. “These people love their cars.”
But it presents a problematic paradox: An EV is only a decarbonizer to the extent that it offsets both gas-powered driving and the emissions needed to make it, a process that leaves a far larger carbon footprint than that for a gas-powered car. The only way for the machine to cover its carbon, so to speak, is in miles. But, critically, in two-, three- or four-EV households, each successive car tends to be driven less. If a vehicle is going to be sitting idle in a garage, a gas-burning version is arguably a cleaner option than an EV, because of all the carbon that goes into making the latter.
Take Strother, 62, and his three Teslas. Together with his wife, he only puts about 15,000 miles a year on his fleet; after more than a decade, his seminal Roadster only has 11,000 miles on the odometer. “I haven’t commuted since 2000,” Strother says. “I occasionally drive more than 30 miles in a stint, but not often.” The couple at least charges their vehicles from home solar panels.