January 2007 (Medialink) -- Ford unveiled five vehicles, and a big surprise -- new Sync technology that wirelessly integrates your cell phone or music player into your cars audio system -- at the 2007 North American International Auto Show in Detroit. More than 6500 journalists have descended upon Detroit from more than 60 countries. The automotive companies spend millions of dollars and 2-and-a-half months getting ready for this show. Its the biggest show in North America.