IMHO, they should just put a curb weight restriction on non-commercial vehicles. 1000kg should be plenty enough, although I would like to see even smaller cars

IMHO, they should just put a curb weight restriction on non-commercial vehicles. 1000kg should be plenty enough, although I would like to see even smaller cars on the roads in the range of 700kg, at least within city limits. It does plenty of things at once: reduces emissions and pollution, improves safety for everyone, decreases congestion and decreases wear and tear on roads. But it can only work if everyone is driving the same size of car/truck. In any case this stupid arms race to get the most imposing vehicle on the road needs to end.