While I agree with the sentiment I think weight is the better lever here. Size for the most part will also affect weight, but weight is the thing that causes the bigger cost in energy use, road maintenance, road noise, consequences of collisions etc.
A car that is too big to use in regular lanes or parking lots should be banned from street use or come with it's own hefty share of fees, bureaucracy and paperwork.
A car that is too big to use in regular lanes or parking lots should be banned from street use or come with it's own hefty share of fees, bureaucracy and paperwork.