Super angry while driving

I am pretty much always a super calm and collected dude. I very rarely let things get to me, and if something does I manage to keep my cool and not lash out at anyone. THAT BEING SAID, if I'm behind the wheel of a large automobile, I lose my shit over the smallest thing. If someone near me goes too fast, I get mad. If they go too slow, I get mad. If someone changes lanes too quickly, I get mad. There have been times where I've seriously considered crashing into someone just because they did something stupid, and it made me angry. Should I be worried about this?