They have a good point that if the trailer is at windshield level then the ultrasonic&#x2F;radar system can&#x27;t detect it, but any vision systems should be able to (like the one I imagine is used to find lane markings).<p>I agree completely with the Verge: this should <i>never</i> happen. &#x27;Beta&#x27; is not an excuse for this kind of thing, ever.<p>A valid excuse? The mode was activated and a small land slide caused the car to slip down the side of a hill. THAT&#x27;S a valid excuse. &#x27;We told you to be careful&#x27; isn&#x27;t.