I understand why we don't have currently have vehicles

It will be nice if we can have cars, in fact, any kind of transportation... a bicycle is awesome too! Although, for some of the TS4 neighbourhood setting, it's not making sense... or in general... because the furthest we can go is between 2/3 blocks away. But, why do they have the road to begin with? I think, to have cars, we need CAW tool. So, that we can add in the road.. or anything similar...