New York's answer to Paris and London's bikes programme has made its official debut, as the city launches its Citi Bike cycle-share scheme.
But while many, including Mayor Michael Bloomberg, are celebrating the rollout, others have been complaining about the docking stations that have sprung up around Manhattan and Brooklyn.
About 6000 bikes have been docked at more than 300 locations around the city as part of the scheme, which is sponsored by Citibank.
More than 9000 people signed up before the launch to take part in the first phase, which is limited to annual members. Those who wish to purchase day passes will get their chance next week.
Along with the thousands who have already paid up, the New Yorker magazine has joined in welcoming the bikes, adorning this week's cover with an illustration of a cycle rack facing a gym window that shows locals working out on exercise bikes.