Was this a Hurst rent a car?

You're confusing Hurst with Hertz. Hurst (formerly Hurst/Campbell) was/is a supplier of aftermarket (and some OE) automotive equipment, and some specialty manufacturing/assembly (Hemi Darts/Barracudas, Chrysler 300Hs, etc.).
Hertz rents cars.
Yes I know the difference between Hurst and Hertz, but Hertz did contract with certain auto makers to have a limited amount of certain sports cars made for advertisement and rentals for their company. I can think of one such car was a 65 mustang in black with gold strips and a single seat roll cage. They made only 12 of that particular car. I assumed he was saying the same thing of this dart! Seeing he claims that it was one of 67 made!