"Car-free" homes?

A BBC News article:

As concerns about the environmental impact of cars continue, a new breed of housing developments are appearing in cities across the UK. Flats and houses are already being built without parking spaces, to deter residents from owning a vehicle. Instead there are pool cars which can be hired out as needed - be it a for weekend away or a trip to the supermarket. But residents are encouraged to use the vehicles only when they really have to.

As Congestion, vehicular noise and pollution and concerns about petroleum increase, we might see a proliferation of such experiements. The efficacy remains to be seen.