On some prints, the film was entitled "How To Make It"; on these prints, Roger Corman was credited as director under his own name.
In two versions of this film copyright 1968 on the opening credits (A superb VIDEO GEMS VHS print running just short of 78 minutes and another lesser quality print running 81 minutes) Ahna Capri (credited as Anna Capri), Laurie Main and Jack Leonard are nowhere to be found even though all three are listed in both the opening and closing credits.
Initially intended as a pilot for a possible TV series.
The first 1'30, racetrack : some shots come from a previous Roger Corman's movie, "The young racers" (1962).