That is the standard social utopia answer. On the down side is the is the all sort of pollutions from all sorts of sources. The up side it allowed those who wanted to follow the American dream to own there own houses to do so. The auto industry and its support industries to add to the American economy. Remember the bicycles are a short range limited load transportation. There is a ten million bicycle bridge in Larkspur, CA that is being funded by toll payers. In Europe only eight percent of the Europe transportations community is by bicycle.