The demand for the C8 is probably higher and was ordered in the middle of the pandemic with a myriad of supply shortages. At the time of your order you "build" the car. They will tell you what is on "constraint". So if you want that option you know your order will not be accepted. They will not ask you months later if you want to change your seating configuration you might get it earlier. And don't pretend making a "higher" volume is part of the problem. Tesla's all of very limited options. Go check out ordering a C8 - there are probably over 11,000 different configurations. My car had a choice of 3 types of seats, multiple materials, multiple thread colors, multiple seat belt colors etc, etc. Ordering a Tesla should be a walk in the park with them knowing what parts they have or will have available to build. When I ordered my X in 2019 they gave me a VIN and then found out they put the wrong wheels on it - they would not fix their problem and I had to reorder - after getting my loan approved and funded.