Wow, pretty interesting. The design is phenomenal and original, but I believe it only to be useful by people such as kids or anyone who does not want to go "fast". They only go about 17 mph, and don't hold very much gas.
But hey, if that's your thing, more power to you!
(that last comment was not directed at you, sk8freak8989, but people who might be interested and who might purchase one)