It was the first fully drive-by-wire production car, and it was the first car with steerable rear wheels. That's an innovation, on one of the worst vehicle of all time.
Not even close - there are probably at least a dozen 4 wheel steering cars going back to the mid 80's starting with things like Nissan Skyline, Honda Prelude, etc.
However, I do not know if any of those was series-produced.
They may have been only demonstration prototypes.