I appreciate your attitude and I guess it is the internet's way of not conveying tone...
anyways let me try to elaborate.
Say my cars Roy Motors, come with an advanced GPS/Infotainment system that tracks maintenance, oil changes, dealer changes to the car, maintenance and so forth. The system also has a really kick-*** interface to my engines OBD-II diagnostics, coupled with above average GPS navigation, POIs, and so forth.
Can you now see a reason for me not wanting to share that?
I am not saying it is wise (because if Roy Motors and Rushin Motors () were developing a system together or at least sponsoring a system together, the system would arguable be even better), but unfortunately car companies dont think that way I guess