Slow, I occasionally drive a truck that auto shifts between the top 2 gears. weird. But the driving I do I seldom get up to that speed anyway. I bet the camera US Express uses is pretty expensive, but who knows. And maybe they have it placed up high in the rear corner so they are looking down on something that is practically a 2D picture anyway. Down nearer to the pavement I would like a 3D image my eyes still make.
Randy