Most of my friends normally treat the old girl with the respect she rightly deserves.Though I'm with Bill on my pet hate,merc doors don't have to be slammed that hard,and I wince every time it happens.Normally this act is carried out by my old lady,now there's one thing having a go at a friend but her!!!There are certain arguments that are just not worth getting into
Trelinski the list is going a bit far.Better and far more effective idea,have you considered carrying a portable cattle prod.You could reach everyone from the drivers seat,and at least this way they'd feel some of your pain

Bear