concept vehicles

In a car commercial, it would sound odd: active suspension, six-wheel drive with independent steering for each wheel, no doors, no windows, no seats and the only color it comes in is gold.

But NASA's latest concept vehicle is meant to go way, way off-road -- as in 240,000 miles from the nearest pavement, driving on the moon.

NASA is working to send astronauts to the moon by 2020 to set up a lunar outpost, where they will do scientific research and prepare for journeys to destinations like Mars.