I already use my Fly in the car, I have it set up on my Touch Pro so that one connection gets me Redfly, charging, and audio through my car stereo. In the end, to improve enough on this model to get me to open my wallet, it would need to be touch screen and a double din model that replaced my original stereo. This would be a tough sell as it cuts the niche for the exisiting Redfly into an even smaller group. I would guess it is not feasible as a profitable product, but I would buy one.
PS - it would HAVE to handle video and still somehow offer a keyboard (perhaps wireless or detachable)