I volunteer to help manage parking lots and I've definitely noticed that vehicles are getting larger and larger. The emissions rule was relaxed/revoked by Trum

I volunteer to help manage parking lots and I've definitely noticed that vehicles are getting larger and larger. The emissions rule was relaxed/revoked by Trump, however California maintained the higher standard (and the auto manufacturers sided with California). So because California has those standards and manufacturers want to be able to sell in California, nothing changed. Even if the rule was revoked and manufacturers could make cars smaller again, they wouldn't because of marketing. Who would want to buy a new truck that is smaller than the last?