OK So I do love having heated seats but it seems most heat the whole seat. I would rather have the option of back/bottom heat. These type of seats are made. My 2008 Yukon had the option and I never even used the bottom heat. The back heat was awesome for my lower back pain. I would even use it in the summer. My wife's Lexus-nope. (3 of them) Daughters Jeep-nope Sons Pontiac-never mind it's old Why is it with so many options given on cars ,this is not one of them. One of the few disappointments with my Model S. I assume the X is the same. Or am I just too picky?