Lego Bobsled?

[Legoroni]

Does anybody know how to make a good bobsled? I found one on Flickr, but I'm looking for some other ideas. Help would be greatly appreciated.

[birdie100]

I made a very simple "bob-sled" as a child when I was inspired by the winter olympics in (96/ 98?, can't remember), but basically it just consisted of a 4 by 8 wing piece with a 4 by 4 plate behind it, two 1 by 6 bricks and a car visor, with the boat smooth tiles underneath. I made a couple of them and a cardboard chute and by getting the gradient pretty steep you could have some time trials between the teams of two! Sadly my MOC doesn't even begin to compare with the one you reference on Flickr, but it seemed pretty cool to me at the time!