Stanley Kramer always referred to this film in interviews as his least favorite and least successful of the films he has directed.
The motorcycle ridden by 'Anthony Quinn' is a 500cc T100R Triumph Daytona.
According to Ann Margret in her autobiography, it was very hard for her to perform the nudity scenes, yet a year later she performed fully nude in Carnal Knowledge.
A riot scene was filmed on the Knowles Lawn at the University of the Pacific.
Gary Lockwood and Paul Winfield played college students here, and were both in their 30's.