For the first three Saturdays in August Park Avenue is closed to cars all the way from Central Park to the Brooklyn Bridge, and the result makes you wonder how there was ever room for cars in the first place. Summer Streets is hugely popular, not just for the bikers, skaters and runners of the city, but also for all bike related vendors who make the most of the opportunity to show off their wares. I actually hit the streets very early on Saturday, driven by the sleepless humidity and the anticipated joy of that sliver of time between the police locking down the street and the arrival of the two tyred tourists. It was a cool and empty passage from here to the Bridge, like omega woman on wheels – fabulous! But the racks of bikes that lined the street on the way down were gone by the time I loitered at City Hall and turned around. Queues for the free bike rentals went around the block, as the olympicly inspired along with the wobbly wheeled showed there are some things you never forget…