The final scenes of this film feature Doris Day teary-eyed, wearing a housecoat and slippers. When her husband of 17 years Martin Melcher died suddenly just after production was completed, gossip magazines at the time used stills of Day from this movie, looking distraught and out-of-sorts, to accompany their articles about Melcher's death.
Jamie Farr and William Christopher play supporting roles as hippy bikers. 4 years later, they'd both co-star on M*A*S*H (1972)., as Cpl. Klinger and Lt. Father Mulcahy on M*A*S*H (1972), respectively.
This film was the first project under a multi-million dollar deal that Doris Day's husband and manager Martin Melcher had negotiated with CBS shortly before his death in 1968. In addition to this movie, the terms of the contract committed the network to a guaranteed five year run for a sitcom to star Day, and a minimum of two one hour musical variety specials, also featuring Day. Once the basics of the contract had been fulfilled, Day went into self-imposed retirement.