Tesla has already figured out the last part: fines for overstaying at the charger...

Electric cars don’t need more than an electric dryer power. Do you know how big the feed is for a medium size hotel? It’s big. Not saying everything will happens in a few years, it will take a couple of decades just for the fleet to switch. Europe will take longer.

Smart grid is coming, which will allow for systems to use electric produced in uneven patterns. Just imagine every single plugged in electric car as part of the grid. Take the power where you have it to send where you need it and average it over the entire grid plus car/wall storages...