I think that bicycles and other human powered (also with electric assist) vehicles or small electric vehicles like scooters are the best short term future we can ask for. And working public transport - who cares if it's autonomous out not. There are already places that work with these.

I find it strange that you mention Smart Fortwo, which is not particularly small when one compares it to VW Golf for example. Toyota IQ would be better example, it's not much bigger than Fortwo, but has four seats.