I'd like to see some different classifications to allow for cars & trucks intended for strictly low-speed urban use, maybe limited to cities or even secondary roads (ie no highway). That would really bring some sensible innovation.
Think japanese <660cc Kei
Up here, we;re allowed to import these things once they're 15 yrs old... I'm seeing the little trucks pop up all over the place. If I can risk life & limb in a 15 year old one, why not let me do it in a brand-spanking new one?