Atrix Touch-display via HDMI ?

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http://forum.xda-developers.com – Just curious if anyone knows if the touch-display functionality on the atrix will work with HDMI mirroring when connected to a touch-sensitive external display? Curious as I'm contemplating getting one to setup in my car in the center console, idea is to replace a display in my center console with a touch-sensitive one and run 1x HDMI & 1x USB cable into my arm rest storage area where the phone can reside. Would be nice if it worked, I could have android on a larger display in the car, internet, navigation .. etc etc... seen guys do this with some tablets but I'd like to see if I cou (HowTos)