Cheap and plentiful fossil fuels.
We’re rolling back CAFE standards too.
Always gonna happen. Oil margins are gigantic and they'll use every dime of runway they can. Electric is better in every single way and batteries tech is only making that more true every day. The dinosaurs won't go quietly into the night.
CAFE standards were always a stupid idea. If we want to reduce fuel usage then increase the tax on fuel instead of punishing manufacturers for selling vehicles that consumers want to buy.