Normally you are either going so fast you are looking far down the road and not over the side or really slowly, trying to not rear end the car in front of you,

Normally you are either going so fast you are looking far down the road and not over the side or really slowly, trying to not rear end the car in front of you, the height is not that noticeable unless one is a passenger. One time I was on a freeway in Houston at night and suddenly sparks started flying down on me while I was going at normal speed - it was a truck that had flipped on its side in the merge lane that was above me and to the left and was grinding against the road and the guardrail at about highway speed (for a little bit), that was a new fear unlocked.