Image courtesy of SmartHome.  The central laser broadcast station is positioned in the middle, between 2 car parking locations.  When you click your garage door opener, the laser activates.  The laser light has been pre-directed to a specific location on your dashboard, so that as you advance into your garage, the light harmlessly runs over your hood and on to the designated location, which you know is the proper spot at which to stop your vehicle.  Only well-informed garage architects know about such economical and highly functional features for your garage.
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