[throwaway85825]

The auto industry is just responding to incentives, the EPA makes it way easier to hit emissions targets the larger the vehicle.

[OkayPhysicist]

Those incentives went the way of the dodo last year. The fine for violating it is $0

[throwaway85825]

It takes 6 years to develop a vehicle. You cant rely on it being 0$ forever, the laws/regulations didn't change.