i can make broad, sweeping generalizations if I find them to be true in my experience, I-like-to-bike,

and, collectively Americans have become MORE impatient and less tolerant. Extrapolated to driving, that can be one of the root causes of people raging in their cars in parking lots.

Genec saw parking lot rage. I think sociatal factors are to blame.

Society is more about group process than independant thinking, in my opinon.

I find it axiomatic that Americans are becomming less tolerant while driving.