The bike project / Why do Haredim put the brakes on pedaling?
There's no Jewish legal problem with bikes (so long it's not on Shabbes or holidays), but the relationship between ultra-Orthodox Jews and bikes still hasn't blossomed.
New York's Satmar Hasidim got Mayor Bloomberg to block a bicycle path through their neighborhood. In Israel, pashkavilim warn against the dangers of riding. The Ultra-Orthodox recoil from bicycles, in their eyes a children's game or outright permissiveness.