I saw that powerwheels video too - gave me the idea to search for one at a yardsale n build my own. Most the ones Ive seen are too small , i have seen one in stores that would be big enuff, but a touch expensive to just hack up at $325. Its one of those two seater Escalades with a built in radio. My idea is to keep the body and radio, make a full tube chassis, run lawntractor engine - around 12-14HP, trans, wheels ( large same size wheels) and a removable kicker speaker setup behind the seat ( for when y feel the need to get dirty in the mud) - only two things holding me back- the powerwheels body and the welder to build a frame. Its a definite project when i can find the body.
I also thought of making a sky high lawntractor , with a lift kit - ive seen it done before , seems like another interesting project ( again once i get a welder). I also plan on using lawntractor pieces , like some large old tires off like a cub cadet or wheelhorse ( all 4 wheels) , a large engine ( like a 18HP twin briggs i have), and some sort of chain drive to a differential , with the possibiltiy of a 'flexable' suspension, sorta like a rockcrawler. Keep y updated when i get the parts.