Correct.
It's because of "...the fine print of Corporate Average Fuel Economy (CAFE) standards adopted in 1975, Gerald Ford’s reluctant response to a crippling Middle East oil embargo that sent gas prices soaring. To protect American commerce, work trucks and light trucks were subject to less-strict CAFE standards than family sedans. Trucks are also exempt from the 1978 gas guzzler tax, which adds $1,000 to $7,700 to the price of sedans that get 22.5 or fewer miles to the gallon.
Those incentives encouraged American car manufacturers to double down on trucks. But the CAFE standards also had a more subtle and far-reaching effect: They pushed carmakers to broaden the definition of truck.
“'Cars and light trucks had two different standards. It became easier to meet the standard with trucks. So automobile manufacturers thought of ways to basically build trucks that are really cars, and that’s what generated the SUV,' said Massachusetts Institute of Technology economist Christopher Knittel, who has spent much of his career tracing the unintended consequences of government fuel regulations."
https://www.washingtonpost.com/business/2023/04/07/trucks-ou...