I talked to the folks doing this in Detroit for saftey systems. It's a consortium of automotive companies that are using 802.11N to communiacte with each other and share GPS location, CAN vehicle data, such as speed, traction, etc. There'll also be boxes at fixed locations giving GPS correction data as well as stoplight status. They'll be able to sense thing like oncoming pile-ups in fog, traffic jam info, etc. It's quite interesting.

And of course the infotainment folks are drooling all over it too.