A vehicular video mirror system comprises an interior electrochromic
mirror having a transflective mirror reflector and a video screen
disposed behind the mirror reflector so that its presence is
substantially unobservable to a driver of the vehicle until the video
screen is actuated to emit light that passes through the electrochromic
reflective element to be viewed by the driver of the vehicle. Common
control circuit circuitry may control dimming of the electrochromic
medium and actuation of the video screen. The control circuitry may
receive a signal indicative of selection of a reverse gear of the vehicle
by the driver and actuates the video screen in order to display video
images captured by a video imaging device disposed to the rear of the
vehicle and having a field of view rearward of and external to the
vehicle.