On a Wednesday evening, about 30 people — mostly kids — sit poised on their bikes on a street in downtown Reading.
It's 6 p.m., and they're about to head out for their weekly ride through the city.
A man in a white t-shirt goes over some safety rules.
"Be aware of your surroundings," he says. "No stupid stunts, none of that. And please stay together."
With that, they take off, to the tunes of Marc Anthony's "Vivir Mi Vida," playing from speakers on the back of one guy's bike.