"Twenty-three robotic vehicles including modified SUVs and dune buggies return to the Nevada desert this weekend to try to win a $2 million prize from the Pentagon for crossing 150 miles of hills, valleys, rocks, tumbleweeds and man-made obstacles," reports Reuters.
"Last year, in the inaugural race sponsored by the Defense Advanced Research Projects Agency, no machine made it beyond sight of the starting line in the challenge designed to promote the development of driverless vehicles that one day could carry supplies for the US military in war zones."
