The future will have decentralized energy production and delivery and cars will run on power stored in some manner other than electrochemical batteries (flywheels, hydrogen, hybrids of the two, etc).
I like the thought of this but it won't happen until the "power" company/manufacturer figures out how to repetitively bill for the energy you use.
They developed self contained reactors in the 80's that allowed you to drop a technically safe reactor on a deserted island and have power to run desalination equipment, household equipment, etc. About the size of a small car and under $10k (1980's dollars). Non were sold that I know of. There is no recurring profit so no interest to produce them.
