What the world needs now is another distraction to keep a driver's eyes off the road, and Pioneer is ensuring wheelmen of the future will have something other than the asphalt to focus on with what it's calling the Network AV playback system. It relies on WiMAX to send your entire backlog of Knight Rider episodes straight to your Trans Am, and could stream every track from the Ronin Original Motion Picture Soundtrack too. Pioneer also envisions its technology beaming data to your backyard and anywhere else you can get a WiMAX connection -- which, right now, isn't too many places. But, hey, at least with this tech you can drive somewhere that does. Optimistic video aft