Now I know what my next smart phone will be (other than an Apple product) - after some search, i finally found a product that can take a video from a telephone and "stream" it to a TV
HTC Media Link HD - this device connects to your TV via an HDMI connection, draws power via a mini-USB, connects to the phone via wireless connection... that means, that now it should be possible to stream video from a 3G or 4G device to your in-car entertainment system, just like the Pandora radio through a bluetooth connection...
HTC Media Link HD Overview - HTC Accessories
there is a member on the yahoo ibus hacking group in Middle East, who pointed out this device - he is using it for the navigation, movies and whatnot on his factory Nav with the factory TV module and a factory AV input... from my understanding, the phone's touch screen becomes a touchpad for the Nav screen navigation...
definetely goes into my To Do List...