Interesting post...
I am moving to the Chicago area next month and things like this have me scared with my T4R. When I was out there visiting I didn't see anywhere near as many foreign cars as you do in NJ. I also heard a story from a friend who said his sister's Lexus was keyed with BUY AMERICAN when she drove out there 2 years ago.... I know these probably mean nothing but I can’t help but think it is possible.