Extinction. It happened to the dinosaurs, the wooly mammoth, sabre-toothed tiger, trilobite, passenger pigeon, and the badge-engineered Plymouth Cricket. The Cricket's not just extinct, however, it's also all but absent from the fossil record, a car so obscure that many expert automotive paleontologists have never heard of it.
And no, I'm not exaggerating. Just try to find an intact Plymouth Cricket, I dare you. Neither Craigslist nor any of the major car-trader websites lists a Cricket for sale anywhere in North America as of this writing. There is no Plymouth Cricket owners' club, either--Google the phrase "Plymouth Cricket Club" and you get plenty of information about a community athletic league in England, but nothing about the car.
Jalopnik called the Cricket "the amazing disappearing Mopar" and speculated that it may have been the worst car Chrysler ever sold. It wasn't; the Aspen and Volaré have it beat by a mile in that department. Any car that "aspires" to the title "Worst Ever" has to be memorably bad to even be in the running--but the Cricket isn't even remembered for its inadequacy. Our own Chris Hafner, who once famously wrote that "bad cars can be incredibly interesting," has never so much as mentioned the Cricket in passing in nearly five years of blogging. That should tell you something right there.