On a recent flight in our wheel plane Cessna 206. I was trying to find some tailwind and since I was light and had a 3 hour flight, I went up to 12,500 feet. I did find some still air which was better than 20 knots on the nose down low. It was cold up there, around 50 degrees but I did have some snacks with me to pass the time. So I enjoyed a cookie that my family sent me all the way from Michigan. Cheers!