Audi unveils driverless car at Las Vegas tech show

Hot on the heels of Google, which began testing an auto-piloted vehicle last year, Audi has unveiled a driverless car at a Las Vegas tech show that it began testing on the highways of Nevada earlier this week, the Washington Post reported.

Other automakers also unveiled their latest advances — intended to turn cars into more of a super-smart moving computer than an engine on wheels — at the 2013 International Consumer Electronics Show, which opened Tuesday.