I flew in and out of here the other day as a Hertz President's Circle customer with a reservation for a full-size car through Delta.com.
I received an email notifying me about the Ultimate Choice or whatever it's called at this location before arrival. No text message.
For an early afternoon, mid-week, there were a couple of Chevrolet Suburbans, a bunch of Chevrolet Malibus and Impalas, and some other random cars and trucks. No Chrysler 300s. I grabbed a 2019 Suburban with 4,700 miles on it.
When I returned it at the end of the week the same type of cars were there. I didn't see anything noticeably different.