Grand Challenge finish: not so grand?

Looks like our autonomously war-waging robotic overlords won't be taking over any time soon. A little over two hours and about seven miles into the DARPA Grand Challenge race in the California desert, all vehicles were either withdrawn or disabled. But oragnizers say just because no competitor finished the race — leaving the $1MM prize unclaimed — doesn't mean the event was a flop.

Link to status board, Link to CNN story.