True but very old results!

Bikers for years have drafted truckers while crossing America on the interstates, some even got permission from the driver. Not for fuel, but for fun. Put your tire in the middle of a semi’s rear low swung safety bumper going 75 mph and you are in a vaccum. You become a extension of the truck, he slows down you slow down. Once in position you can release throttle and idle and run same as truck. I rode 600 miles on the back of a Harley with my Dad back in the 50’s doing this exact thing. Problem is you can’t see where you are going, LOL! I wonder what the result would be, if the tractor you are tailing has a head on while you are drafting? Call 911, no call the M.E.!