Do what I did with my girlfriend: go on a VERY spirited drive on any twisty roads you can. The "oh you drive like I do haha" that came after my disclaimer of "I drive fast just fyi" changes REAL FAST to "OMG STOP DONT- NOOOOO" when you're on a mountain letting the back end slip
My mom really does not like how I drive. A "heated discussion" later and she took back the words she said after I got my license "oh nice I have a free driver now". If we're together, she drives and that's that. Doing that might help where you tell her look if you hate how I drive, why don't you drive or just shut up. Be upfront, and honest.
But yes, the friend. She hot and/or single?