Earth Policy Institute
In the year 2000, world bicycle production climbed to 101 million, more than double the 41 million cars produced. Sales of bikes are soaring because they provide affordable mobility for billions of people, increase physical fitness, alleviate traffic congestion, and do not pollute the air. Indeed by 1965, car production, which had been growing rapidly since World War II, was poised to overtake bicycle production. But it never did. Mounting environmental concerns slowed the growth in car output and accelerated that of bikes.