Nevada has become the first state in the United States to approve self-driving cars, a necessary step for Google's vision to become a reality. In a statement, the Nevada Department of Motor Vehicles said that its Legislative Commission today approved regulations allowing for the operation of self-driving vehicles on the state's roadways. Nevada's rules are the next step in a process began last June, when the state passed a bill that required its DMV to draft the rules. Autonomous test vehicles will display a red license plate, Nevada officials said. If and when the technology is approved for public use, the cars will carry a green license plate. Nevada's standard licese plates are bluish-gray, with most of the license plate representing mountains fading into a yellowish sky. The regulations are a boon for Google, which stunned the industry in late 2010 when it disclosed that it not only had developed an autonomous car, but had successfully tested it on public roadways. Now, Nevada could be prepping for the first self-driving cars to populate the streets of Las Vegas, among other cities. More... Lenny: Hey, look! Homer's got one of those robot cars. (Crash) Carl: One of those American robot cars.