Maybe that would be a good thing? Without need for parking, commercial districts could get denser and denser, and people could have nice large homes far away for cheaper than ever. If the cars aren't causing pollution or gridlock, what's so bad about living in the suburbs?
Electric cars cause pollution; they run on mostly coal or natural gas and have very toxic-to-mine, manufacture, and dispose-of batteries. They also emit just as much particulate emissions as normal cars: http://www.digitaltrends.com/cars/electric-car-particulate-m...
The way to "save the planet" is to not drive. Driving a 5000# vehicle around thinking you're doing good for the environment is just the marketing genius of the car industry in 2016.
Suburbs destroy public life, create anxiety and a sense of atomization, and turn natural spaces into scar tissue. Even if you could perfect transportation technology, suburbs are the least optimal configuration for humans to live in the world.
