I've been curious as to what extent the Model X doors can detect objects. There is this thread Chicago-Parking the X in a Garage, tight space (Video) where Dalia scratches the door on a concrete post (not to single you out Dalia :smile. Also, I have rails for my garage door that protrude from the ceiling a foot or two (still need to measure the height from the floor). They are about an inch in total width, could the sensor detect something that small/ narrow? If not then at what width/ total surface area will they reliably detect an object and stop?