Some (not all) non-performance AWD Teslas do exactly this. As early as 2014, when they intro'd the S 85D, the front and rear motors were set up so one would be

Some (not all) non-performance AWD Teslas do exactly this. As early as 2014, when they intro'd the S 85D, the front and rear motors were set up so one would be more used at low speeds, for better acceleration, and one at high speeds, for more efficient cruising.