I rode with one of my good friends on a 200+ mile trip one time. He drove a Toyota. My knees hit the dash, so I couldn't scrunch down in the seat, which caused my head to not quite fit in the car. After about 20 miles of riding with my head turned sideways, I had to have some relief. Fortunately, he had a sun roof in the car and opened it up. My head stuck out to about mid forehead. By the time we got to where we were going, my hair had flapped so much in the wind that it actually hurt. I'm sure it was quite the sight to see us driving down the highway.