I think Zipcar is a great idea. It's not really suitable for those who commute to work, since everyone wants to commute most days at the same time, so you might as well have your own car. But with those of us who work at home, our cars are mostly idle. There having to be so many cars for people who hardly use them is a waste. But public transportation doesn't get the job done, and taxis aren't a great alternative either, because it costs about the same (and is usually more convenient) to simply own a car.

If only we can get more of the people who still unnecessarily commute to offices, to work from home. Then the roads will be unclogged, and when you do want to get somewhere, you will be able to do so freely, perhaps in something like a Zipcar. Aaah.