I don't do much driving around rush hour as my Z only gets driven for pleasure, but when I had a new set of tyres put on the last car I had the misfortune of finding myself driving amonst the 'dropping the little cherubs off at school brigage' in Twickenham (middle class children apparently can't use their legs anymore and have to be driven everywhere).
Good Grief! They are some seriously bad and aggressive drivers, not least the crazy cow who decided she couldn't wait the half a second it would have taken to let my hefty and very visible car with its headlights on drive down the road and decided to cut right across me to turn right, nearly slicing the nose off the Z and causing me to have to slam the brakes on (and the horn). It's probaby the only time I've been tempted to follow someone and tell them exactly what I think of their driving. I'm glad I didn't - probably would have lost my rag and said or did something I'd end up regretting later. I'm also glad I don't have to experience the school run around our way every day - it's like a scene from Mad Max!