Now that i think of it, you're right. I really never noticed while playing. (The ONLY thing that i really hated was the ending...)
Now, i'm Canadian (I live near Toronto) and i went to North Carolina for a Nascar race. (The most redneck thing out there, eh?) Almost everyone, of not everyone was very nice, the vendors at the Race were polite, and nice.
I think the reason people see Americans (And maybe Canadians, too) the we do is becasue of the movies.