I noticed a shift in zoning laws in the big cities in the San Francisco Bay Area from minimum parking requirements to maximum parking requirements. Those in charge are hoping to get people out of their cars into public transit. And, use a carsharing service (e.g. Zipcar) for the few times when a car is needed. I've seem a parking requirement for a minimum number of parking spaces for a carsharing services in newer apartment buildings. The main thought is to have an impact on traffic.