I like the quality of the leather, and the seat heaters work well. But I don't find the seats very comfortable overall--if I drive for over 30 minutes, I tend to get a butt-ache. It seems the seat is relatively hard, and it's flat, with little side bolstering. I got into my old Audi S8 today, and was reminded of how good the seats are in that car. I think the difference is that it feels like sitting *on* the seat in the Tesla, and *in* the seat in the Audi. What are your thoughts on the seats--do they work well for you?