I ordered my 2018 LR AWD with enhanced autopilot in July 2018. Took delivery September 29, 2018 in Highland Park, IL. Have absolutely loved the car. Best purchase ever. On December 18, 2019 I received email from Tesla saying that because I owned a LR AWD, I could purchase Acceleration Boost. I got really excited, went to my Tesla account online and could not find AB in my upgrade page, only FSD. Called Tesla CS to no avail. It took getting on these forums to have someone point out that I actually own a Stealth Model 3. I admit, there were some hints that I ignored (red line under Dual Motor in app and in car screen; Track Mode (which always looked whited out), but I never paid for a Stealth because I didn’t know it existed until 2 days ago. Makes sense now why I can’t get AB. I now own the fastest P (lighter weight) on the planet. Took me over a year to discover, but I consider myself to be the luckiest guy on earth right now. Exactly the car I wanted-top acceleration, top handling without 20 inch wheels that would have popped on a Chicago pothole and bigger brakes (all the things for a track I’ll never go to). For those who don’t go to the track, the Stealth is the one (if you can find one). Thank you, Tesla, for mine. Extremely grateful!