The federal government wants to get autonomous vehicles on the road more quickly, and says it will fast-track policies and possibly even waive regulations to do it. U.S. Department of Transportation Secretary Anthony Foxx - surrounded by representatives from General Motors and Ford as well as Google and Tesla - said Thursday that the National Highway Traffic Safety Administration will spend the next six months developing guidance for automakers on what's expected of self-driving prototype cars and what sort of tests should be used to make sure they are safe.