That's basically "pods" from every future sci-fi. Pods are not efficient because they have all the same problems as cars and none of benefits (except emissions)

That's basically "pods" from every future sci-fi. Pods are not efficient because they have all the same problems as cars and none of benefits (except emissions). You will need gigantic roads everywhere like we have today, traffic jams, parking issues, all super expensive and financed by the city dwellers who don't benefit from cars so much. It is actually funny that rich car centric suburbs are subsidised by poorer population in the apartment blocks in the city cores. :)