Taxi without the driver

ULTra is a battery-driven, 200-mpg-equivalent, elevated personal rapid transit system with many four-person vehicles. First deployment is scheduled for London Heathrow Airport in Spring 2010, to serve Heathrow's new Terminal 5. Working as circulator transit for airports, office parks, universities, and other major activity centers, ULTra is faster than a car. In these applications, ULTra solves the "last mile problem."
For more info: http://www.ultraprt.com/