Americans really like their SUVs. The problem is that trucks and SUVs cost more money to fill the tank than small, more fuel-efficient cars. As gas prices rise, vehicle buyers have a powerful incentive to value fuel efficiency higher.
That’s partly why the fuel efficiency of the average new vehicle in America rose from a little more than 20 mpg in 2007 to more than 25 mpg by 2014. But then, nearly in line with a dramatic drop in gas prices, Americans began buying bigger, thirstier cars again.
George Carlin? Still right.