But what is wrong with free parking as a perk for buying an EV? The usual situation should be that there are enough chargers (and spots) for both PHEVS and pure EVs. I think we shouldn't design around the assumption that there aren't enough chargers, and make life difficult for everyone. Still, we can think about what we do in case there aren't.
It is wrong because it assumes that others are subsidizing you. Econ 101: No Free Lunch! Someone has to pay if somethhing is free.
I don't think that the charger installations will advance as quickly as the production of the vehicles they are intended to serve. I may be proven wrong, but as the people parking for "free" occupy a space for someone needing a charge, sentiments for a 'free for all' may change!