Haha nice. They are neat planes for sure but sure are annoying. They fly at FL300 and cruise about 250kts. We tend to call them speed bumps. Same thing with the p180s. Cruise at FL350+ and at turbojet speeds, but when they start their descent, they slow up and become a speed bump. A controller in my area had a deal because of that, massive compression when they come out of the flight levels.