How did this connect to your car and Internet? Literally anything with blue tooth support will work with a smartphone. If you need to go cheap then a cable and mp3 player can work.

Wait was this thing really just an extra control screen for your phone? Looking at their manual it connected to the car power, pulled information from the phone, sent the information back to the phone, and the phone sent the information to the car.

If that accurately describes what was happening then please just get a car mount for your phone.