A blurb in either Motor Trend or Car and Driver mentioned that "there is now a lower-priced camera for backing up that is integrated into the rearview mirror". Local GMC service department is clueless. Yet - GMC is showing this is available on 2009 models. I have 2008 SLT and back-up sensors are basically useless. Had license-plate mounted camera in Honda Pilot and did not like it. Has anyone had this "new" rearview mirror/camera installed in their car? If so, where did you purchase it? I appreciate any assistance you can give me.