Bud Yorkin originally wanted a studio to finance and release the film but none were interested. He raised money independently by using his share of Tandem Productions, the TV production company he founded with Norman Lear, as collateral, made the film and released it himself.
When Gene Hackman and Brian Denehey's characters are giving Ann Ann Margret a bouquet, the bouquet goes from yellow flowers to white to yellow to white with changing film angles, also the bouquet goes in the wrapper then out, then in then out again.