I think it could be argued that the SSR and Prowler were not meant to be cars that would tear up the asphalt, despite their looks, and that was precisely what they were, lookers. cars you could sit in and cruise at a stately speed, not caring. If we are looking strictly at production numbers as clearance for failed cars, there's a Ferrari or two I'd like to submit.
Cars that were not on the list, but absolutely belong there ahead of the SSR and Prowler...
Edsel. Aztek. Yugo. DeLorean. Blackwood.
that's a short list of 100% utter failures. far exceeding any failure generated by the prowler or SSR.