All rental car companies suck; they spend too much time cleaning the outside of the car and ignoring the inside. I’ve refused cars many times because of dirty inside windshields, stinking interior and food boogers.
Only good thing from Hertz was that they partnered with Magellan to develop the Never Lost GPS navigation system.
Back in the early days of Hertz's Never Lost system, the wife made a trip to Virginia and rented a car with the system. The biggest problem they had with it was that it couldn't react fast enough to changes in driving. They might have to stop in a parking lot and let the thing catch up.