"I'm a designer living in San Francisco. By night, I go to concerts and explore the city. By day, I study how people use Twitter. I was trying to find something to commute and tool around the city with. I looked at scooters (new and vintage) and electric bikes. Seeing PiCycle piqued my interest, but the first test ride sold me. Biking in the city, the times I feel most vulnerable are when cars are accelerating quickly from a red light and I'm trying to get up to speed. With PiCycle, I'm often accelerating as fast as the cars I'm beside." Mark Trammell of Twitter