In the new AutoWeek, there's an interesting article about the design criteria of the Apollo Lunar Rover, the vehicle that astronauts used on the moon. Think of it: had to operate in a vacuum (no combustion), on a surface that was full of craters and big rocks, weigh 400 pounds, be able to carry twice its weight, negotiate slopes of 25 degrees, handle temperature extremes of plus or minus 250 degrees, be able to be crammed inside a pie-shaped payload bay that was 66 by 60 by 49 inches, and be easy to assemble by two guys in bulky spacesuits.
