With Advanced Custom Sound, No longer is it necessary to pull out the big road atlas to find the best route to a destination. Whether it be across town or across the nation, an auto GPS system makes it easy to find just about any place. Built into the GPS receiver an off-the-shelf unit purchased will have detailed maps down to the street level. Pre-programmed into the unit are businesses, hospitals, gas stations, rest areas, attractions, restaurants, veterinary offices and many other points of interest that a traveler may be seeking.An auto GPS system utilizes touch-screen technology. All one needs to do to navigate is touch the screen.No longer is it necessary to fret over finding that doctor's office downtown or that place where the delivery is supposed to go. Just type in the address and the auto GPS system will calculate a route from where it is at. The user can further refine the parameters to avoid highways, avoid toll-roads, take the quickest route and other options depending on the unit purchased. The route is both called out by voice and shown on the screen. A human sounding voice gives turn-by-turn instructions while the onscreen images graphically show instructions that are helpful getting through even the most difficult to navigate routes.