Shift changes at Yellow Cab Cooperative in the Bayview have an unvarying rhythm: Workers line up outside the cashier's booth, each clutching a small wad of bills. One by one, they hand over a $5 tip, which some drivers call a "kickback." The cashier gives them a set of keys and a waybill to log their hours. Engines sputter in the parking lot, fluorescent lights zap in the break room, taxis glide out the gates onto Mississippi Street. Thousands of dollars change hands in the course of an hour. Much of that... More >>>