[justinph]

This is kind of neat, but it negates one of the great benefits of skating (or walking, or running, or bicycling) which is exercise.

[bignaj]

I agree. They are quite cool but they are solving a problem I never had. If I had a bunch of money laying around and was bored I would buy these but not otherwise.

[Houshalter]

Isn't it sort of similar to segways?