The Southern California GLXP team produced nice animations of spinning landers. At the time I was not impressed by the idea, particularly with its spindly “despun” legs. I am well aware of the advantages of spinning spacecraft. This serves to maintain a predictable attitude for long periods of time without using any fuel. Without spin (or other stabilization mechanisms) a spacecraft will expend a great deal of fuel making piddly little attitude, “Turn Rate” changes. It is impossible to get the craft perfectly stopped, and any motion will eventually yield a backward craft. The situation is quite different when thrust is intentionally sustained. Altering the thrust vector to make attitude adjustments is surprisingly easy, and “free”. But in tiny spacecraft ...? The big question deals with getting rid of the spindly legs and despin mechanism. What if a saucer shaped vehicle settles to the ground like an inverted Frisbee ... ? If it simply spins in place, or skids across the surface with gyroscopic stabilization, it might be a practical landing. In terms of rovers, full or partial lift off thrust should make it possible to spin it up again with rim jets. Then a 500 meter hop and another spinning landing (if provided with suitable video), could win the Google Prize. (Despinning a video, optically or electronically is easier than despinning the landing gear.) This doesn't satisfy all my interests, since I am serious about demonstrating a Human Lunar Lander, but it would be nice to use the prize money to accomplish this larger goal.