When returning the car near LA airport, there was a large open-air parking lot shared by three rental companies. The staff on duty that evening gave quick and rushed instructions, asking us to simply leave the keys and go. Later, I discovered that Hertz had overcharged me for an extra day's rental. Fortunately, I had taken some photos as proof, and Rentcars was very proactive in helping me reclaim my dues. However, I was not happy with Hertz's overall process. Make sure to carefully monitor any extra charges on your credit card when renting and returning cars.