[feadog]

Practically everyone can plug in their car at night, and with nothing more sophisticated than a $10 outlet timer, fuel up the fleet no problem.

Even that expense should disappear. My Fiat 500e lets me set a timer to start its charge.

[ZeroGravitas]

And then the next step is to talk to the grid in realtime and soak up any excess wind energy when demand is otherwise low and pause charge if there's a sudden spike in demand and get a discount from the utility company for helping them out. This is already built into some chargers, but should be standard in cars in future.