I’m am not sure what to think of this new invention yet, it looks promising as an idea, but doesn’t look so great in terms of the aesthetics. Here is what the designers/producers say about the QuadLine “100mm wheels on Longboards and Skateboards for longboarding and skateboarding. The QuadLineâ„¢ is the fastest skateboard / longboard … all » available. After longboarding in San Francisco, California and not being able to skate smoothly over cracks and messed up roads or turn fast enough down streets and go around people and cars. Really good board for URBAN TRANSPORT and Downhill SPEED. You haven’t felt anything yet, You got to try the new QuadLine”