Certain musical cues in the movie were originally written by John Williams for early episodes of Lost in Space (1965). Particularly notable is a menacing motif which originally accompanied early appearances of the Robinson's Robot, while he was still under the control of Dr. Smith.
One of the films included in "The Fifty Worst Films of All Time (and how they got that way)" by Harry Medved and Randy Lowell.
First of three feature films pairing Bob Hope and Phyllis Diller. The other two films are Eight on the Lam (1967) and The Private Navy of Sgt. O'Farrell (1968).
Didi drives out of the studio lot in a 1965 Ford Mustang convertible. MSRP was $2,557 (about $24,800 in 2023).