Me and my friends used to do this to each other way back in the 80's because even then, when you have played a game a lot and gotten good at it you tend to forget how badly you sucked when you first started and then, when someone new comes along and makes mistakes while you watch you can't help but, start making remarks and trying to give out tips and sometimes you just feel like pulling your hair out because it seems so simple and easy to you and you wonder why they can't just automatically learn it quickly and so you get riled up.
If you make it clear to him that he is over-reacting and ask him how well he played when he was a beginner then, he may actually close his mouth. Also you could practice by yourself when he isn't around and once you've gotten really good you can go head to head with him and whoop his ***.

EDIT: I didn't see the part where you said that he does the same thing to you over how you drive.
That doesn't sound good to me. Does he ever seem critical of you in any other ways and is he at all temperamental?