BRADENTON, Fla. - Retired Gen. Tommy Franks has signed on to be the spokesman for a company that uses global positioning system technology in teens' cell phones to let parents know how fast they're driving. Franks will be the official face of Teen Arrive Alive. The organization aims to get teens to carry a cell phone containing a GPS chip that sends out regular signals letting parents know where they are and how fast they're going. If a certain predetermined speed limit is passed, an alarm will go off in the cell phone and parents will be notified. A bumper...