Worth noting - a lot of the benefits of PRT are realized with short, one-way on demand car rentals. Obviously you still have to drive, but you get quick access to a vehicle, go where you want, hop out, and someone else gets to use it. At scale it&#x27;s awesome, but it&#x27;s been hard for sprawling US cities to get to that scale given entrenched habits.<p>Here in San Diego I use Car2Go - <a href="http:&#x2F;&#x2F;car2go.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;car2go.com&#x2F;</a> . It&#x27;s awesome for stuff like airport runs - I walk to the car (they&#x27;re about a 5 minute walk from the airport), tap a card on the windshield, drive home (about six bucks and fifteen minutes; cheaper than the bus if my wife is with me), and then when I&#x27;m done with it the car is there for someone else to use. They&#x27;re small, nimble, electric, and fun. Unfortunately they don&#x27;t seem to be hugely popular since SD is very, very sprawling and their home range is fairly small.