Harley Davidson launched an advertisement-movie that adapts to the properties of the viewer. The advertisement is shown on Youtube. The IP of the user enables the advertisement to detect the current location of the viewer and change the license-plate of the motor-bike. So, If you are in New York, the license plate shown, is a New Yorker license-plate.
Arguments: I had this idea, while I watched a Harley-Davidson-Advertisement (see Youtube-Video below). The license-plate of the motor-bike was changed to suit the Switzerland market. It showed "ZG ". ZG stands for Zug, which happens to be the "state" of Switzerland where I'm from. This change was made by hand, but could also be done automatically by software, and detecting the location by IP is not so difficult.