General Motors Corp. is signing on to be the sole domestic car and truck sponsor for the 1996 U.S. Olympic Team and the Summer Olympic Games in Atlanta for between $5 million and $10 million, the Detroit Free Press reports. Philip Guarascio, GM's VP of marketing and advertising, now has to make sure the investment pays off. "We will have tons of vehicles all over the place," he predicts. "Our plans are to talk about our vehicles and technology in an engaging and surprising way."