No, they sell about 2,200 Model 3P's per day, so 15 cars is only 10 minutes of inventory.
Also Highland has no significant changes to the suspension or aero. It's the same chassis so the suspension is identical other than some claimed tweak to the length of a control arm here or there, and the slightly different shock valving. And it's the same body other than the slight change to the front bumper. Aero stability is mostly about the rear window and trunk lip, and somewhat affected by underbody panels, but regardless the difference between a car that's aerodynamically safe at 162mph vs 125mph is like the difference between a Ferrari and a pickup truck.