as far as the grid handling all those EV's??? well, guess we just lucky that EV's have been slow on the uptake...then again, aint much to take right now is there?
Good luck taxing the grid at night. As for the daytime, by the time tens of millions of *EV cars want to, the nation will have figured out that local production of electricity from wind and solar is a good (tm) idea.
taxing the grid at night is very unlikely to happen in most of the country because they have to be able to handle peak load demands in late afternoon. around here, we sell as much as we can at night and still have issues throttling back the hydro. after all, it can only be shut down so far. now they can always turn a turbine off, let it spin for nothing but that would be just plain stupid. what they usually do instead is pump the water back up into a holding pond next to the dam and store it for a dry day. doing is like a 12 to 1 power loss or something like that... all i know is water is heavy and takes a lot to pump it up hill. its kinda like regen on the Pri... returns are very similar. besides, the grid we have now for the most part, should be replaced ASAP.
The hybrid-landscape is still pretty shallow and have lots of room to expand. The battery technology can only handle so much, regardless of how 'advance' it is. Like SMART car, pure EVs maybe still best-use in Metro or fully-developed towns with decent infrastructure to support its usage and range. But these cars are still not capable to handle cross-country or even skip-town travels. At least people are still not feeling 'comfortable' with them. A lot of 'what-if' questions to tinker on like....Will I be able to find places fill-up (charge) my car? Who could 'fix' it in case it broke-down, etc. So they may still end up choosing the tried-and-proven way to travel, which are flight, train, ship or ICE-equipped rentals.