My phone does 90% of this for any car I'm in even without the OBD-II interface. The few things I would like it to do that doesn't do well (in older cars) are:

My phone does 90% of this for any car I'm in even without the OBD-II interface. The few things I would like it to do that doesn't do well (in older cars) are: * Manage climate control * Provide good old fashion FM radio reception * Connect well to the amplifier via bluetooth Beyond the basics like gas/brake turns signals and wipers, my IDEAL in car driver/passenger interface (built in or otherwise) does ONLY a few things * Provide a easily accessible tactile control for volume and climate control I can operate without looking down. * Show my current speed and efficiency (mpg) (RPM/Gear are ok if relevant) * Show me the mapping app of my choice on a screen I can see with good audio prompts * Provide a external antenna source for basic FM (GPS/GSM ok too) that is better then the phone can provide * Show a menu of all visible audio sources (bluetooth/wifi/aux-in) - Not something that takes 5 button presses to choose a different source. * Provide alerts for emergent issues with the car: Out of gas, Light failed, engine trouble. Anything more then that is a distraction. Edit: Don't get me wrong, Its early days for this project and if these things are in the roadmap I'm excited.