This is for bicycles, not motorcycles. Also:

Solo inventor says he’s not out to replace gears, just offer an alternative.

“I always imagined it going along the same line as when automobiles got automatic transmissions, and it got easier for more people to drive a car,” Mercer said. Lycra-clad weekend warriors, gearheads, professionals, and retrogrouches may always prefer direct control of their cogs. “I just think the vast majority of people out there are in the same boat, where they find themselves in too high a gear going uphill, and it can be a pain to get to a low-enough gear quickly,” he said.