A few years ago we had a 68 3/4 ton longhorn owner and he had them on his rig. His name was Stan...screen name was something like inline lover or something like that.
Anyways...he is the guy who clued me in on these. He had them on hos longhorn and said they were neater than 2 chicks makin out.
I highly doubt they were
THAT cool...but I'm sure they are pretty neat though.