My Dad, the driving instructor

I've been driving for more than 10 years now, but every time (well, almost) my dad gets in the car with me, he gets into his driving instructor mode. He's not a backseat driver, but gives driving-instructor-like directions. Case in point:

Dad: The exit's coming up in 100 meters, you should indicate soon.
Me: Ok, got it.
Dad: Right, it's 50 meters ahead, indicate now. (by this time, I'm expecting a NASA-like countdown to the exit..), OR

Dad: That lorry's going pretty slow, you should overtake.
Me: Ok dad, I will. Soon.
Dad: Right, make sure there aren't any cars coming, indicate then ease out slowly, then speed up till you overtake him.
Me: Ok dad..would you like me to write that all down? (mutters..)

I honestly think that secretly, my dad would like to be a driving instructor in his free time.
Aaah, dads-what would we ever do without 'em? ;)