"Morgans" wrote in message ...

"Blueskies" wrote

I forget which brand truck we were looking at (Ford?), but it had a sculpted shape to the top of the tailgate about
8" wide. The salesman said it helped to improve gas mileage...

He was wrong. It is to provide extra clearance for people towing 5th wheel or gooseneck trailers.
--
Jim in NC

No, it was not a 5th wheel clearance thing. I did not describe it very clearly. Regular rectangular tailgate with a wide
upper (top when closed) edge...