I can hear it in my MY, but not my mates MY. Me driving both in the exact same manner. That suggests its the car and not my hearing.I think you won the Tesla lotto OR you (along with a few others on this forum) have vey sensitive hearing/brain.
Here is on test method to verify it.
1. Ride with someone who doesn't hear it while measuring with the sound frequency/noise meter.
2. Ask the person if he/she can hear it.
2. Measure other Tesla cars with the same meter and see if the noise/frequency is the same.
3. If the noise/sound frequency is the same, and the other person is still not hearing it, it is you, not the car.