We had something similar on a ride last week at a give way sign. Idiot driver decided to go into the right lane(to turn left) & then proceed to turn left in front of us..

What an idiot. Couldn't wait two seconds..

However...yesterday as I ventured through the same area-it's windy & normally no passing lanes-and I helped a motorist...I was going up & around one of these windy bits & noticed no cars coming the other way for a while so I gave the person the thumbs up & waved them on by. Nice person honked in thanks