My daughter is turning four on the 15th. My inlaws decided this would be a good thing to get her. 2.5mph for about 2 hours. Maybe she'll come along on the next Coshocton ride. I'm sure she'll do better than the Katanas.
We'd import water from kuwait. About 1 liter bottles. You could drink it in a few minutes then in the next 15 you'd sweat it out. Thing is you really didn't sweat. It would evaporate before your clothing got wet, just salt stains.