Cars are of course faster. Driving styles are terrible. i'm fairly sure a big amount of people have no concept of breaking distances! 
True. The single most frightening thing for me.
I always leave tarmac and tyres and a bit more when pulling up in a queue. Then you get some gloit pulling up as close as possible behind you. Retards. I then pull forward to allow a gap (so I don't get rear ended if they do), then they pull forward so close they can lick my rear bumper. I hate that. Are they thick or what? I'm tempted to put the hazards on when the lights go green, and stay put so that they would have to reverse to carry on.
People do some sort of stupid manoeuvre only a retard would think is ok, nearly wipe you out, then gave you a black look/threaten violence/give verbal abuse etc as if it's your fault!
If they hit my car, that'll be that. It'll be damaged then, so it won't matter if I back up and ram them a few (hundred) times to teach them a lesson.
Second most frightening thing. Attitudes like that 
To elaborate.
Many bad drivers out there. They do things that annoy. In fact, driving standards generally are terrible.
Remember. You ain't gonna be able to change THEIR habits. Live with it. Accept it. If you get annoyed, and yes, I do sometimes, that will only add to the bad driving on the road. This time, you.
And the third most frightening thing is people like you who take things in the literal sense and can't relate to the true meaning.
Thanks for that lesson in wisdom 
Bloody hell!!! Come and give me a driving lesson please dad!
Certainly wasn't taken literally.
What I am getting at is the general mood, the aggression, the "the every other road user is a knob", the sense of "the others are not doing what
I want them to do so they are stupid, non-concentrating fat chavs who should not have a license". I agree, there are lots of those on the roads, but when everybody starts getting aggressive because someone else had done something slightly annoying, it makes for even more unsafe roads.
Something annoys you, fine - but you also should to accept that you annoy others, such as Mantahatch. Maybe you don't understand why what you do annoys, but it does. Maybe others, like me, don't understand how a car close behind in a queue can annoy you. It does annoy you, so ok, let's leave it at that.
Yeah, of course, I have my pet hates, like everyone - driving too close at higher speeds, no use of indicators or using indicators as a right to perform a certain maneuver. And if I got annoyed everytime this happened I would be annoyed every morning and every evening. Fun, yeah right.

What I am driving at is the strange metamorphosis that overcomes so many people once they drive out on the open road.