When I was in NYC last week, a friend praised the serendipitous sociality of Manhattan. It is LA's turn. Roadcasting allows anyone to create their own radio station, broadcasted among cars in an ad-hoc network.

Om Malik interviews the team behind the automaker(linking in hopes of Bob Lutz' opinion)-funded Carnegie Mellon HCI project, saying, Think of it as pirate radio-meets-smart mobs at 60 miles per hour. It's open source, which may prompt use beyond the car (think roaming laptops, condos and mobile devices). Good thing too, as earbudded New Yorkers are starting to function like Angelenos without the crash protection and cup holders.