I am a car driver, if I get given a lift anywhere I don't feel the need to tell the driver when the road is clear to pull out or repeat the instructions on the sat nav.
I guess they can drive alone without my imput.
So why does my friend always feel the need to sit there like a driving instructor giving me prompts. I have asked her many times not to but she can't help herself. And no... I am a good driver before you ask 
Can I ask if you you feel the need to prompt... why??