I think I’ve found the best solution for the Y (&X) hitch capacity challenge for bike lovers.
(cross posted in Model X bike rack thread)
The Saris SuperClamp EX 4.
The rack sits super close to the car and the bikes sit closer also and it weighs 30-40% less than other 4 bike platform racks. Greatly reducing the torque on the Tesla hitch.
It folds up so low it can’t be seen through the rear window. So close in fact one of the Shepard arms needs to be folded out - pictured sticking out wide of the rear bumper ~1” whilst in the folded up position.