Why Apple and Google are going after the TV when the world is about mobility, wireless communcation, and advertising is beyond me.
The dash board is the place to be, and Android or iOS could be basis for the next automotive navigation/entrtainment system. Imagine an iPad like screen in the dash, with google maps, iTunes, search capability, and the ability to download Apps that are unique to the driving experience. Apple could do it on the iPad or something customized for the vehicle (remove the battery, add AM/FM, make it more heat and cold tolerant), or one of the gps firms, or Clarion or Bose could deliver a device using the Android OS.
The navigation map would overlay weather, could predict traffic and recommend routing for multiple stops based on traffic and weather. Could put gas prices on the screen when the tank is under a 1/4 full. And for revenue there could be location based advertising based on your search history, bio, wish lists.