@Seed,
That has to be very close to the top of my own list. On the theory that no two cars can occupy the same space at the same time, it makes driving really tricky.
Also way up there are people who come to an almost complete stop when turning right. There is an art to this kind of turn. You begin turning the wheel, and when the turn is roughly half complete, you sort of ease into the brake pedal. This keeps the front turning, but the rear comes to almost a total stop. Actually, with the late model Toyotas, this one could get interesting.
I really feel like an alert driver
should be able to predict traffic movements a few seconds ahead of time. When this one can't, he gets a bit antsy.