Why are cars bigger in the U.S.? It’s not just cheap gas.

Americans, as you may have noticed, like to supersize things. Soda cans are bigger here, and so are hotel rooms, houses, and cars. Here in the U.S., giant pickup trucks and SUVs are the norm; visit any school at pickup time and you’re likely to see Chevrolet Tahoes, Jeep Grand Wagoneers, and Ford Expeditions in the carpool line. It would be easy to pick on the GMC Hummer EV because it’s massive; the battery alone is as heavy as a Honda Civic. But the Hummer EV is such a blast to…