
Electrobike calls it the world’s fastest hair dryer, but its Pi electric bicycle isn’t even in the same league. It has half the wattage of a Conair -- just 750 watts, or about 1 horsepower. -- Sue Carpenter (Photo by: Don Kelsen / Los Angeles Times)

The transmission integrates the motor and pedals into a single driveline so it can easily pull itself up a hill, while the flywheel not only produces electric energy but also regenerates it when braking, so the energy’s released again when it’s spinning. -- Sue Carpenter (Photo by: Don Kelsen / Los Angeles Times)

Pi’s maximum speed is 20 mph stock, but with a little after-market hot rodding, i.e., a larger chain ring and gears, the bike is capable of about 46 mph. -- Sue Carpenter (Photo by: Don Kelsen / Los Angeles Times)