Have you seen this movie-clip?
Posted: 08 Jul 2009 11:10
It is quite spectacular....
Mythbusters - Compact Compact Rocket Sled
http://www.youtube.com/watch?v=aSVfYwdGSsQ
Mythbusters - Compact Compact Rocket Sled
http://www.youtube.com/watch?v=aSVfYwdGSsQ