Last night, atop the Hoover Dam, Freightliner unveiled the Inspiration Truck — a partially autonomous big rig that could save lives, mitigate driver fatigue and stress, and reduce CO2 emissions up to 5 percent. Daimler, which owns Freightliner, says it has done more than 10,000 miles of testing on the truck. And now it's street-legal, having been officially granted one of Nevada's "Autonomous Vehicle" license plates (the first for a commercial truck) by Nevada governor Brian Sandoval at a media event before the unveiling.