I don't see the point but suspect it s just bragging right technology. Gives Volvo something to brag about... Problem with joystick controls, assisted driving and the likes is that people loose their skills. Look how bad distracted driving has become ? People are getting used to automatic braking, smart cruise control and the like and end up not paying attention.
Well, The docks up here prohibit swimmers in the water. Real bottom service divers hear boats running and know how to protect them selves, Less that kid in north Lake Worth.