Interestingly, I frequently heard the idea of not needing parking because your car would drop you off at work, drive home, then pick you up at the end of the day. But since almost all cars on the road right now are gas or gas hybrid, you are doubling your miles driven, thereby halving your effective fuel economy. You are also doubling the amount of time on the road, so now rush hour lasts twice as long. From 7-8 in the morning driving everyone to work, and then 8-9 empty driving home. This may potentially have infrastructure issues--road capacities, paving, etc.
I didn't say you don't need parking, I said you don't have to do it. The car can drop you off and then go park on its own. Driving home would be stupid.
