The Loop-In is still only a concept at this point, based upon the often-theorized, rarely used, huge overhead hoop wheel. In the wild 1920s and '30s, Popular Science had a mania for predicting revolutionary transport concepts that incorporated similar wheels.
With motion described as feeling like “pushing a wave continuously”, the board section is independently mounted from the turning wheels and even has handgrips that give you the potential for flipping upside-down.
Whether the Loop-In will roll down your street some day or be included in this pantheon of awesome-looking rollabouts, only time will tell.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.