That is simply amazing!
I think the luxury market is exactly where electric cars need to head. The technology so far is very impractical in a low-budget package (with the result being bland runabouts like the Coda), but can be developed and made into a recognizable, fully-functioning automobile at a higher price point. Just look at the Model S.
Think of it as income leveling or voluntary income tax. The repairs alone will have in the sub 100k bracket in a year.
Ah from the golden age of scifi. Much as I love Heinlein, the rolling road and slidewalk idea were not good ones for some very obvious reasons. As a metaphor it worked well.
As for electrics. It's not just the battery issue it's the whole car. We need composite vehicles and the large manu's are not able to switch over to that while they are still stamping out steel bodies. Too many sub industries rely on the status quo in the car industry not being upset. To build the car we all actually need right now would result in the unemployment of several million workers in the US alone.
Perfectly possible right now to build a 2 seat commuter car with over 200k range per charge and a vehicle weight in around 1300lbs. Just try and sell it and see how fast it has safety issues or was built with unfair components and gets tariffed to death.