EcoWatch: To reduce air pollution and traffic congestion, cities around the world are booting cars off roads and encouraging people to bike to work or school. Its a great suggestionuntil terrified bikers find themselves riding on a street with only a stripe painted on the pavement to separate them from cars and trucks. Showing up to work a sweaty mess after cycling a long distance on a hodgepodge of inconvenient, congested side roads doesnt have much appeal either. Germany, the country that invented the...