Motor Psycho is probably the closest Russ Meyer ever got to making a straight thriller. While earlier RM roughies like Lorna and Mudhoney featured disturbing rape scenes, Motor Psycho features two implied gang rapes. The second of which is a house invasion scene that wouldn't look out of place in a 70's exploitation movie. Censorship laws of the time meant that these scenes were never overly graphic; however, they are definitely pushing the boundaries for the time and are undoubtedly nasty. Similar to Lorna this film also has a distinct lack of humour, with the odd exception such as the moment where Haji sucks the poison out of Alex Rocco's leg in a clearly sexual way. But generally speaking the sexual side of proceedings are more alluded to and there's really next to no nudity on offer here, perhaps understandable given the often nihilistic tone.
Motor Psycho is perhaps most notable in Russ Meyer's canon for two things. Firstly for introducing Haji, who as ever puts in another feisty performance as a Cajun woman married to a slob played by Coleman Francis (director of the anti-classic Beast of Yucca Flats). Secondly, the movie is a clear precursor to the superior Faster Pussycat! Kill! Kill!, RM conceived that latter movie as a version of Motor Psycho but with three female criminals. Ironically, given Pussycat's status nowadays as RM's most famous film, Motor Psycho was much more successful commercially on release. But the test of time has been kinder to Pussycat. Although a good film, what holds Motor Psycho back is that, with the exception of Haji, the ladies do not have significant roles. RM needs his women to take centre stage, and this is as male-dominated as an RM production gets. Acting is generally good, with Stephen Oliver convincing as an unhinged Vietnam vet, Meyer himself appearing as a hilariously un-PC law enforcement officer, Alex Rocco is decent as the hero and Haji is ace (just love that accent). So, in summary, not a classic Meyer but without doubt a superior 60's exploitation effort.