Another reason Checkers went away so quick was that some cities have laws pertaining to how old a cab can be or how many miles it can have. I know in Houston a cab can't be over three years old.
There's an old movie from the late 80's or early 90's called Second Sight with John Larroquette and Bronson Pinchot (Cousin Balki) and John's character drives a Checker. It was in very nice shape too.
I saw a fairly clean if slightly faded Checker wagon this morning. Not sure of the year, but probably '76 or later as it had historic vehicle plates which are mostly meaningless except they exempt the car from smog checks that are required for cars made after '75.
Used to have neighbors around the corner who had one. It started out dark blue, and then they had it painted maroon. I used to call it the taxi car.
They were a unique older couple who liked unusual things. Their house was a mid-century modern style redwood and glass building with a flat roof. It has since been renovated and looks like a conventional house now.