The issue I think, is this may be the least aerodynamic car I've driven, and I've owned every brick there is. Sure its square, but it does look like they chamfered all the sharp edges, which, is apparently misleading. I drove off without wiping the snow, and not only is there a vortex in front the windshield, but it works so well with the airflow over the front end, it was DEPOSITING snow on the very leading edge of the front hood at 75mph. It wasn't just a low pressure zone or turbulent right above the middle of the hood, but air over the surface of the hood is moving 10mph faster than the hood itself. It's like a pickup bed, but in front. ... That alone may be the cause of the slight highway wandering. It's looking to swap ends like shooting an arrow backward's, or letting off the gas coming out of a turn in a 1980 911 turbo. The only thing keeping us straight at all, may be the polar vortex created by the slab cut rear end. This truck creates drag by mere human observation. It's quantum. No wonder I'm getting 14mpg.