If he had to cross the center line to pass you are actually supposed to honk or flash lights in most states.dude what is with drivers...I got beeped at while getting passed at 27 mph in a 35mph zone just outside of the center of town. Single dude in an F6000 contractor truck. So, I moved into the center of my lane for him.
Also -23% of the speed limit is kind of annoying.