Driving from CB to Ankeny on Friday, just me and my grandma. Catch up to a Jeep while I had cruise set at 78, they don't get over so eventually I decided to pass on the right. They speed up before I get around them and the semi in front of me. I (32 years old) asked my extremely mild mannered 83 year old grandma if I could gun it. Yep. Went 85 for a minute or 2 to get away from that twat.
Use cruise control and drive in the right lane, it's not hard and will make your and every other person on the roads life less annoying.