I think the reduced fuel demand will be offset by the addition of recharge outlets at the majority of servos...and if there's a roughly 15 minute charge time we will need 3 times the number of 'filling stations' given the current (pun intended ) 5 minute average refueling time.
I'm curious to see how countries like Oz can produce enough electricity to reliability charge 30 million vehicles on an upto daily basis. We don't do nuclear and i doesn't make a lot of sense to use fossil fuels to make electricity so we can stop using fossil fuels