Truly, our lives would be a little tougher if the ban on vehicles be raised. Everything we do would be on pause, businesses will be put in jeopardy although it is a way to end pollution within our environment. Animals would be the next option for humans but do you think these animals wont cause pollution within the environment? I doubt if humans could have control over them as much as possible.

Without motor vehicles our environment may be pollution free but standard of living will lag behind

This is true, it advantages and disadvantages would greatly affect humans.

Success to you!