How about if Tesla adds Robo-Plowing capability with short-range radar detection of the plow corners, curbs, road edges, and parked or abandoned cars buried in snowbanks and invisible through heavy snowfall. They currently have a forward looking radar as part of their sensor suite. How about...
How about the stacks contain monster speakers and tie into the vehicle's throttle and brake data and play selectable sounds (Harley Davidson/ mega diesel/ Tie Fighter/ Millennium Falcon/ Fart Cannon)?