There certainly are cities where there is a take no prisoners attitude which can be intimidating with all the Suvs and trailers if you aren't used to it. I've spent a few years in long commutes in nyc and boston, rush hour can be pretty aggresive or pretty backed up. Nyc has better drivers, btw. I'm sure atlanta, dc, la, sf are all similar that way. Speedwise not so much, those two racin topped at maybe 125mph which is really fast for 4pm anywere, anythng 90+ would definitely be ticketed as reckless unless you're out in montana or some such country. Isn't that normal cruising speed on the autobahn?