silly car stereo question

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http://crunchbanglinux.org – My car has room for a double din and I was wondering if there was one on the market that would display my cell phone (not blue-tooth. I mean being able to use my cell phone via a touch lcd instead of the cell itself) or if it would be possible to reprogram one to do that. Hope that makes sense. The logic here is that there isn't anything a receiver does that's directly related to the function of the car (at least mine doesn't, not even the outside temp) other than using the speaker output, but a cell phone can do a lot more. (HowTos)