Autonomous Segway

Imagine a Segway or similar device that can drive itself, like the DARPA Grand Challenges. Autonomous vehicles not running on an exclusive "track" are OK so long as they have low kinetic energy, mass times speed squared. This way, if the guidance system goes awry, and there is an accident, the damage probably will not be so great. One can beckon a Segway to one's location to pick you up and take you where you want to go, possibly a transportation hub with higher speed vehicles.