Discription of Events: This person is deranged. They didnt like it that I didnt cut off the person I was passing (didnt get into right lane fast enough to suit them) and zoomed into the gap to pass on the right before cutting me off and nearly hitting my front bumper. When I later passed them (without cutting them off) and paced the truck next to me for 30 seconds while passing it (slowed down a bit so it took me longer to pass, jerk move on my part, but not dangerous) they zoomed around me again as soon as they could and cut me off and slammed on their brakes at highway speeds.