Well, Bee Dubya, up in Hoosierland you'd find things are done a bit differently. When a Hoosier wants to use a portapotty as a canoe, s/he don't need a creek or river or anything! And no, they don't paddle 'em on dry land, neither. They tip 'em over in such a way that the holding tank provides the necessary "roadway". And if the holding tank doesn't have quite enough "roadway material" in it (like, for example, if its been recently emptied or they're gonna have a canoepotty race), they get a bunch of their friends together and add whatever it necessary.

And during the Winter AND the Summer folks in the hilly parts of Indiana use them portapotties like tobaggans! During the winter they slide 'em down the snow-covered hills of Hoosierland, and in the summer they slide 'em down the hills by using the more solid contents of the holding tanks, cow "leavings", and stuff like that. During the winter races goggles are recommended; during the summer races they're a neccesity (and it's a real good idea to tobaggan with your mouth closed, too).