yes, 370Z is a car that certain companies rent. Enterprise also rents 370Z's, which means National and Alamo will also since Enterprise is the parent company of both. Chances are though, you are more likely to find the Z, and other nicer cars, at the airport locations. I used to waste my life away at Enterprise when I worked for them
But i'm not sure why people would find this surprising. I mean you have car companies that rent out higher end cars at regular car rental companies.