They don't make cars like that because the society and countries we all live in don't have such a imaginative mind as yours :) and other people of course :)
Why don't they make cars with big fins and suicide doors? They are cool!
We know more about aerodynamics now ... So know we don't need fins on cars.
Some vehicles still DO use "suicide" doors ... Such as some of the 4-door "box" cars.
