Another competitor, Oshkosh Trucks, has entered TerraMax, an 11-foot-tall, 12-ton robotic truck roughly the size of an 18-wheeler's cab.

FORBES: Dude, Where's My Driver?

GrayBot and TerraMax, the other two course-completers, came in at seven hours 30 minutes and 12 hours 51 minutes, respectively.

ECONOMIST: Racing robots

TerraMax's size and vague resemblance to Optimus Prime don't give it much of an advantage in competition with smaller, more maneuverable cars.

FORBES: Dude, Where's My Driver?

TerraMax, a 12-ton Oshkosh military truck fitted with laser sensors and global positioning equipment, nearly plowed into a concrete pillar and was disqualified early in the race.

FORBES: Magazine Article

And the event's largest competitor, an 11-foot-tall, 12-ton robotic truck built by Oshkosh Trucks, called "Terramax, " was pulled from the race after it screeched to a halt just inches from plowing into a concrete pillar.

FORBES: Magazine Article