Massive adhoc network (Score 1)

Semi off topic but I have been thinking about this lately. Why aren't all cars equipped with wifi? Traffic on highways is normally dense enough to give you a adhoc connection to any other car in the state. I dunno what you would do with that connection but it would be really cool. Some simple ideas it could provide ways to inform other drivers in your local network of accidents and delays. I am sure other people could come up with more interesting uses of such a network.