This applies to every car, not just the AP Teslas. I've seen just about every make of car pulling the 65 in the left lane because it's the speed limit BS.
Having driven the CA freeways for 20+ years, both San Fran area, central CA and LA area, I have NEVER seen a semi going faster than 65, except once and it was going 70 (the car speed limit) and I used him to draft behind
But seriously, it's super rare that any semi in CA is going over 65 that I have a very hard time believing that not only are all the semis (or vast majority) in your area going so fast that they honk at you for being in the right lane going the speed limit. Heck, half the time in LA and SF, almost nobody is going the speed limit because traffic won't allow for it