Sen No Sen

Roadcasting:

… a system that allows anyone to have their own radio station, broadcasted among cars in an ad-hoc network. It plays the songs that people want to hear and it transforms car radio into an interactive medium.

Roadcasting combines the good things about listening to the radio and the good things about being a radio DJ while eliminating the bad things to form a new type of radio service. It’s incredibly easy to have your own radio station heard by others in their cars within a 30-mile radius. Roadcasting matches you to radio stations that play the music you want to hear.

Woah!

(Hat tip to unmediated)