5. Mazda Roadpacer AP
The Mazda Roadpacer AP stands as one of the quirkiest chapters in Mazda’s rotary experiment. In the 1970s, Mazda transplanted its rotary engine into a large, Holden-sourced luxury sedan—resulting in a car that was both underpowered and thirsty. Despite its lackluster performance, the Roadpacer boasted cutting-edge tech for the era, including a dictation machine and electric windows. It’s an unforgettable oddball, a testament to Mazda’s willingness to try the unconventional, even if the results were more eccentric than practical.