Oh, man! You have a great memory. Well done.
Hey, was Bert Convy in it?
Americathon
https://www.imdb.com/title/tt0078766/?ref_=ttfc_fc_tt
Peter Reigert, not Burt Convy
In was a cameo pic
Got it by remembering Chief Dan George was in the NIKE scene and looking up his filmography. Burt Convy was a red herring.