Create an aggressively high truck and SUV personal vehicle ownership tax that increases every year. Tie that tax rate to not only the vehicle's ecological and public safety impact, but also to the owner's income (so that you don't have rich fucks just buying them anyway).

Create buy-back programs that offer reasonable market prices and trade-in values for used trucks and SUV's, which would be held as stock for sale to industry and ag, which would be exempt from the above taxes or taxed at lower rate.

Tightly regulate automobile financing so you can no longer offer loans that outlive large dog breeds.

Subject all consumer motor vehicles to fuel economy standards with no bullshit exceptions.

Yes, this will inconvenience a lot of people with first world problems, but you'll never fix anything if your primary goal is to please everyone.