I've had problems with w*nkers in maxpower hatches,they think they can keep up, lol.I usually drive my Z much more gently than I do my company RAV4,and do try to be extra polite in the Z which really confuses people.BMW drivers don't enjoy the best reputation, especially high end models, so when I let people in from side roads, and am generally Mr polite, other drivers don't know how to handle it.I have had to get out of the car a couple of times when I've been abused more than I think is fair, but it helps that I'm 6ft and 16 and a half stone ( ex rugby player) so windows get wound up and doors locked when I approach their cars. BUT, you just don't know how much of a nutter is in the other car.its mainly tossers in vans that are the worst. My wife loves it when she gets hassled by cars hugging her bumper, especially when the road is busy in front,( usually on her way home from work on a dual carriageway) men in inferior cars think she can't drive because she's a woman and try to intimidate her to pull over, so, she boots it and they can't keep up.She then slows down and lets them pass and they never EVER look over. She just smiles at them. It's the green eyed monster at work, plain and simple.