While NASA has had four different rovers on Mars, none of them, obviously, has ever been manned, nor designed to hold human beings. But this month they pulled the sheets off of the first manned Mars Rover concept, unveiling it at the Kennedy Space Center:

Enter a caption (optional)

Enter a caption (optional)

Enter a caption (optional)

Enter a caption (optional)

Enter a caption (optional)

The Mars Rover Concept Vehicle was designed and built by Parker Brothers Concepts, a design/build shop that does specialty and custom vehicles. However, we must point out that while CBS and other news sources are crediting them as the designers of the Light Cycles that appeared in "Tron: Legacy," we believe that is incorrect. The Parker Brothers did produce a handful of Light Cycles in cooperation with the studio for promotional purposes, but we believe that credit for the design goes to either production designer Darren Gilford or concept artist Daniel Simon.