Back when I picked it up in June I had to inquire about it, and I had to request it.
They don't seem to be putting much emphasis on it. Maybe it's because they feel it's no longer the hook it used to be, but I'm pretty sure it's still available.
I put a lot of emphasis on it because with the Tesla you have absolutely no idea. Not just because of market forces, but the Tesla is so inviting to put massive amounts of miles on it. I'm still absolutely dumbfounded about the amount of miles I put on my 70D within 3 months (6500 miles). So much so that I've been cross checking the odometer accuracy. Thankfully they're fairly generous on the amount of miles.
I use it to keep my miles in check and as a floor. I also don't have a good feel for the long term reliability or average cost I'll incur beyond its warranty. I can't purchase the extended warranty in my State.
I would have leased, but at the time WA state had a sales tax exemption if purchased.