(AP) -- After starting out by helping pilots get around, navigational device maker Garmin Ltd. is now more likely to aid a motorist in finding the quickest interstate or the nearest pizza parlor. But as drivers have snapped up millions of the satellite-reading devices for their cars, the surge in interest has attracted new and bigger players into what had been a rather isolated market. Now Garmin could need one of its GPS units just to keep from getting lost.