[vecter]

Reference? When I do a search, all I get is Google: http://www.google.com/search?q=self+driving+cars

Granted, there could be three competitors in stealth mode ... but I'm not getting any whiffs of any.

[greendestiny]

There have been many entrants to Darpa's Grand Challenge over the years, and that's unlikely to be the only development in the area: http://en.wikipedia.org/wiki/DARPA_Grand_Challenge