Model S M.D.
Ludicrous Radiologist
SO basically if you pay for the upgrade from a P90D L to a P100D L the battery AND the seats are changed! And yes i have gone for the ultra white. i know its synthetic leather but its so smooth and feels like the best grade nappa leather. Sweet!!!
Those seats are also supposedly very stain resistant. Check out 'like tesla' on YouTube where they spill all sorts of stuff on their ultra white model X seats and they come right off.