Picked up earlier in the month on a Sunday with a Premium reservation. Was allowed to choose from a Chrysler 300, Infiniti Q50, or a Cadillac XTS.
Took the XTS, which was a 2014 model with 20K miles.
Ride review posted in the XTS thread.
Just in general as I drove around Maui: it seemed like a lot of 2014 model year cars are still in the rental fleets, including National's.