I wasn't sure how to categorize this, so I'm giving it a new "marketing" tag.
I know we're going to see more of this localized, location-based, Minority Report stuff in the future. For some reason though this makes me uncomfortable. I wouldn't opt in for this type of marketing, but I'd love to see the fool next to me using it...
"The enthusiastic guinea pigs for the Mini experiment will be more than a thousand Mini owners in New York, Miami, Chicago, and San Francisco who have signed up for what the company calls "an ever-changing array of unique, personal, playful, and unexpected messages."
The boards, which usually carry typical advertising, are programmed to identify approaching Mini drivers through a coded signal from a radio chip embedded in their key fob. The messages are personal, based on questionnaires that owners filled out: "Mary, moving at the speed of justice," if Mary is a lawyer, or "Mike, the special of the day is speed," if Mike is a chef."
I especially liked the 4th comment down.