Easily the most recognizable vehicle ever featured in the franchise, the Aston Martin DB5 first appeared in Goldfinger (1964). From that point on it was simply 'James Bond's car,' due largely to its special features, courtesy of 'Q' (Desmond Llewelyn).
While Q never explains exactly how the tracking beacons Bond uses to find Auric Goldfinger's base work, the DB5's interface is one we know today as resembling Satellite Navigation, or a Global Positioning System (GPS). Transmitting the information directly to his in-car map without the need for pesky radar dishes, Bond (Sean Connery) was able to track his nemesis' exact location.
Drivers today more often use their GPS to find a nearby restaurant than a smuggling kingpin, but considering that GPS wasn't developed until the late 1960s, and not completed until 1994, Q was ahead of the curve. The Aston Martin DB5 is set to return in Skyfall, with moviegoers no longer impressed by Bond's tracking system, since they can compare it to the one in their minivan.