GPS maker's shares soar after allowing rival TomTom to acquire map provider
                                
                                
                                    (Newser) -
                                    Garmin, the world’s top GPS producer, dropped its $3.3 billion bid for mapmaker Tele Atlas yesterday, allowing rival TomTom to seal the deal. That may prove a long-term disadvantage for Garmin, but investors love the non-deal, sending shares up 16%, their best gain in five years. “There’...