"Parking Lots Are an Incredible Waste of Space. Here's How to End Them.
The main problem with cars in the city is that they spend 95 percent of their time parked on a valuable piece of land. Carsharing changes that ratio, which gives cities the opportunity to reclaim the parking lot.
In comparison, a shared car with 50 percent usage has 10 times better utilization and needs parking only half the time. But, that doesn’t mean that the ideal carsharing city will need half the parking spaces. Surprisingly, carsharing would reduce the number of parking spaces a city needs by more than 10 times."