In this April 11, 2020, file photo, a man and child ride bicycles on 42nd Street, which was closed to traffic, in Oakland, Calif. All around the country and the world, bicycles are selling out and officials are trying to take advantage of the growing momentum by expanding bike lines during the coronavirus pandemic or widening existing ones to make space for commuters on two wheels. Oakland was the first city in the state to launch a "slow streets" program in April when it closed 74 miles (120 kilometres) of city streets, or about 10% of the city's street network, to cars to create a safer outdoor space for pedestrians and bicyclists. Jeff Chiu/AP Photo