I don't know about you, but I've certainly seen enough disaster movies about this scenario. A great big rock is flying through space and its target is planet earth.
Columbia Basin College is home to the first high school team in Washington to be awarded the prestige of being part of the 20th Annual Great Moonbuggy Race. The "SpaceHawks" were admitted after building a prototype with PVC pipes and bicycle parts and submitting it as an entry.