It would cost less than $10 billion to provide cars for all the transit riders who don't have access to them, compared with annual spending of about $25 billion on transit subsidies. A commercial model for such a program already exists. Around the world, anti-automobile activists have stablished "car-share" networks that allow people to have access to cars without having to own them. For example, "Flex-Car" in Portland provides cars for less than $0.30 per vehicle mile--a rate that includes the car, insurance, service, and fuel. Today, car-sharing is seen as a substitute for car ownership. But its larger market may be to replace public transit systems.
Thanks to Chris Steins