Actually Graeme L may be right; it may be a form of motion sickness. I used to have trouble riding in a car when I was young. I have found that I cannot watch TV shot in the 4x3 format stretched to a 16x9 screen. Round objects are no longer round. A persons head may appear wide, but if tilted it becomes tall. Kind of like a moving funhouse mirror effect. Make sure he is never using the stretched screen effect. Zooming in may cut off some screen top and bottom info, but it gives full width without distortion.
