Scotsman.com News - Sci-Tech - Fly me to the moon - by catapult
http://news.scotsman.com/scitech.cfm?id=510172006
"Scots scientists have unveiled plans to develop a giant slingshot to catapult material from the earth to the moon."
DevilDucky - Used Car Catapult
http://www.devilducky.com/media/15990
"All you need is a tractor, a shotgun, a giant catapult and an old car. What do you do with the gas you save? Light it on fire and fling it into the air too, of course."
YouTube - Volkswagen: Un-pimp Your Ride III
http://www.youtube.com/watch?search=vw+unpimp+un-pimp&v=29P_WppkJEA
pimp-mobile launched by way of trebuchet. great stuff