Time Sharing Cars
timmy_walker writes "This article from the associated press talks about new car time share services from ZipCar and Seattle-based Flexcar, where "Customers make reservations via computer or telephone, and the company uses remote-access systems to control who can use the car when.""
This is much like Autoshare in Toronto, Canada. There are many others as well. A good resource can be found here.
More convenient than a car? Maybe in some cities, but certainly not all. There are a lot of areas in my city that would require several transfers and a lot of time to get to by public transport. So assuming the car was in a resonable location relative to my starting point/home, this could be ideal.