This seems to be a real problem since I've had about half of my passengers complain about it independent of each other. Passengers that sick in the 2nd or 3rd row for longer road trips complain that they get car sick and feel nauseous even though they don't typically get car sick in other cars. I drive my model X the same way that I drive my model s and haven't ever had anyone complain about sickness in the model s. Anybody else get these complaints? If so, what have you done to try to ease the ride? I'm not entirely sure what about the model X makes it worse than the s in this regard? - Is it because the model X rides higher so gets more sway on turns? - could it be the big windshield and double vision issues causing sickness for people in the back? - the stiffer, bumpier ride of the X? - air flow problems into the rear cabin? - maybe the new car smell? - something else? Seriously, any advice appreciated.