The mission is simple: provide good, working bikes to folks who can't afford to spend hundreds of dollars on new wheels. The Working Bikes Cooperative rescues old bikes, repairs them to great condition, then sells them to Chicagoans for cheap -- anywhere from $35-$65. They also ship bikes, tools, and parts to Ghana, Nicaragua and Cuba. The Tribune ran a profile of the group over the weekend, and they've been flooded with donation offers ever since. [Trib. log-in: gapers/gapers]