The subject line warned you. Read no further, lest you be offended.
I spend a lot more time driving than I would like to. But I do notice things. While anecdotal I suppose, this comes from a very long period of observing and being affected by how motorists drive their vehicles and of course there are exceptions but I stand by my observations.
Best Drivers: Young Aussie males. There seem aware of everything around them and have a good idea of the impact their driving has on other vehicles and they concentrate. They do silly stuff at times, but it is rare for them to inconvenience another driver.
Most Frightening: Young Aussie females. Aggressive, maybe ok at steering but insulated from everything. They are too busy chatting on their phone and putting on lipstick and quite oblivious to the world around them. They may answer to a question, 'What other vehicles on the road. I did not notice any.' Not do they notice pedestrians as they push through them. When Helen Ready sang 'I am woman, hear me strong', I don't think it gave the girls such a license to drive so badly and inconsiderately.
Most Frustrating: Young Asian females. So careful, so frightened, brake if a leaf rustles on a tree. Yes, driving is a priveledge, but you need to excersise it and actually drive. There is a pedal on the right, the accelerator. Give it a moderate push when the lights go green.
Most Arrogant: Live in Malvern, Hawthorn, Kew and Camberwell. Mostly drive 4wd or Euro cars. Very aggressive driving to the point where sometimes they are dangerous to life and limb of other road uses. The law is the only thing that stops them driving over the top of other cars, but that is about all it stops them doing. They can also be among the very distracted if they are blonde and female and have just picked up their kiddies from their private schools.
Most Shake Your Head and Wonder: Jews in the Caulfied/Balaclava area. I would not say they are dangerous as they are quite predictable. See the full beard or the scarf over the head and be alert. Sadly, this describes many of the younger ones. The older ones are such incompetent drivers, they should have their licenses taken away. What paper work for the police if they ever chose to drive along Carlisle Street. They don't.
Old: Mixed here, some are ok, some are not and some improvement as many older women have driven all their lives now.
Generally: Asian and Jewish and old are very frustrating motorists but rarely dangerous. 4wd folk are the sort of people who make communism look attractive, but if you see a young blond female with a P plate, turn off the road and get away from her.