To be easier on your torment the poor-o-metre, one possibility could be to charge a yearly fee for a safety inspection on a personal car, with the fee being scaled by its weight. This way, cars would be safer generally, and people driving a Smart Fortwo would only be out the time it took to get the inspection.

These sorts of inspections are already in place in several countries like the United Kingdom, Japan, and Germany. Some countries also require higher annual registration costs for heavier vehicles, with other places adding inflated street side parking fees. Think of this as sort of an amalgamation of all these things.

The higher the delta between fees for driving a compact car and a large pick up truck is, the more reason people might see in not choosing the F-150. I'm not saying everyone should be cruising around in a Chang Li, but even downsizing the truck lovers to a Chevrolet S-10 would be great. Though of course, the manufacturers would have to make smaller trucks again, which means less profit, and la de da you know how the shareholders feel about that.

Side note, I see people in the summer driving their Jeeps with the doors off. Not my cup of tea but damn if it doesn't look cool as hell.