As America's Cash for Clunkers program replaces old cars with new ones, some are discovering electric bicycles as an interesting alternative to gas stations, traffic jams and parking fees.

In Japan, battery-powered bikes sold more than scooters and motorcycles in 2008, with a 24% increase in sales since January. The most common explanation for this spike is environmental awareness – less gas equals more green – but I believe the housewives, senior citizens and businesses buying the lion's share of these vehicles are doing so for reasons more practical than altruistic.