An airplane is not going 560 mph at altitude. It should read about 160 to 175 IAS, (indicated air speed). Now across the ground it is probably going about 550 mph. I agree the altitude will kill you. Remember Payne Stewart? Dead in seconds with no wind chill. And someone posted that he was in the wing. But I think he was in the wheel well. Or all BS.
Whoops! About 300 knots over the wing.