In a parade at the Big E in West Springfield Massachusetts and check out the GM future liner in the background
Yup, Checker did sell some of their cars as cheap police cruisers. Dad told me about when we moved to Western WA (I was 3 1/2), and the town we moved to, the police force had two Checkers--one each marked and unmarked, and one rainy night, they went down to one marked, because the one detective was drunk.