I've had my 2017 Mod S for a number of months but being retired I don't do much long distance driving. I've taken 1 200 mile trip, and another time spent 3 hours in traffic after the rocket launch (that's another story). Both times I was in the vehicle for about 3 hours. Each time I found the driver's seat to be extremely uncomfortable and hard. My butt and my hip joints were really aching and no amount of moving around and changing positions would relieve the pain. I have no problem with this length trip in my Chevy Volt so I know it is the Tesla seat. Has anyone had this problem or can anyone suggest how to relieve this?