I have heard about a commercial that they used a baseball bat.

There was a John Delorean ad where he was hitting a GTO with something, but I don't know if that's confused with the B-Body ads or if there was a separate ad.

Now lets see them try it on a 47 year old Endura....

Picture all the excited yelling and fist pumping, the first engineer takes a good swing, CRASH... then silence, major cringing and the group slowly backing away out of view.

I can't say if I remember a hockey stick being used to demonstrate the Endura bumper. I do remember the hockey collector cards that you got from Esso after  filling up (back around the Canada - Russia hockey series in 1972).

I do remember Gordon Jump (WKRP in Cincinatti) as the spokesman for the new 1974 Canadian Pontiacs (Laurentian, Catalina, Parisienne Brougham). "Take one test drive, that'll be it!" I also remember the "Let yourself go in an Astre" TV ads for 1974. I even remember a 1969 Beaumont TV ad in which they referred to the car as an "Acadian Beaumont", something they officially dropped from the Beaumont name after 1965.

I seem to remember a commercial with someone banging the nose of a 73 or so Grand Am with a crowbar.