check these out

http://s1166.photobucket.com/user/Steve_Cane/media/The%20ultimate%20Wagon%20%20%20%20the%20WAGONE/10201253659239895.jpg.html?sort=3&o=2
http://s1166.photobucket.com/user/Steve_Cane/media/The%20ultimate%20Wagon%20%20%20%20the%20WAGONE/10201253659079891.jpg.html?sort=3&o=6
http://s1166.photobucket.com/user/Steve_Cane/media/The%20ultimate%20Wagon%20%20%20%20the%20WAGONE/2400174880142.mp4.html?sort=3&o=0

Cool!
Back when I was a kid I had that idea, and other similar ones, but lacked the tools to make it a reality....Though I probably had enough parts...

I had a pedal-powered model John Deere 3010...My Dad had the REAL thing... I LOVED that tractor, until the summer a bunch of Waspers built a nest inside of it...