[wwweston]

> More importantly, when you go _down_ a hill, it's pretty difficult to stop quickly (this is why I personally stopped longboarding)

This might help you stop the longboard quickly, but will it help you stop quickly (but not too quickly)?

[muraiki]

Good point! The stop will never be instant... and you'd better have good grip on your shoes, too.

While I think this product will be pretty neat, I can't see it revolutionizing transportation simply because longboarding requires a good amount of mental energy in comparison to a scooter or bike. But I have to admit, it is seriously fun, and the sensation of gliding is awesome.