The only thing I can think of to bitch about is, HOW FUCKING HARD IS IT FOR PEOPLE TO NOT SUCK AT DRIVING!?!?!  For fuck's sake, you're basically driving a missile that weighs anywhere between 500 and 4000 kilograms, why wouldn't you be more invested in not being a jackass and keeping your missile from hitting another, or doing something that causes one missile to hit another?

And then there are those that are too cautious.  Either that, or too stupid to realize that if there's a line of cars behind you, several of whom are opting to pass you, you're probably driving too slow, and arguably being just as much a danger as an over-aggressive driver.