OMG! THAT GUY ON THE TAIL GATE IS GOING TO DIE!!! QUICK, DUDE! PUT YOUR VISOR DOWN!!! lol. i couldnt resist. this is cool. you should see if you can give it suspention with Rubber Bands. then it would be REALLY cool!
Definitely has a good spacey look to it -- I can easily picture the minifigs 6-bying through their favorite crater patch. On an unrelated note, didn't you use to have a lot more MOCs on your page -- where'd they go? Ridley Station remains to this date one of the greatest things I've seen in Lego. (He's still got it on Brickshelf, people. Do yourself a favor and check it out if you haven't yet.)