They were always doomed to fail as they could only ever serve as short distance transport within a city, And because cars within cities was already a stupid idea to begin with, all the problems that came with that won't be solved by making all the cars bigger, heavier and a lot more prone to spontaneously explode.
They were always doomed to fail as they could only ever serve as short distance transport within a city, And because cars within cities was already a stupid idea to begin with, all the problems that came with that won't be solved by making all the cars bigger, heavier and a lot more prone to spontaneously explode.