The hertz agent was in the rental car park when I returned the car and handed the keys and paperwork to her.She inspected the car for damage and I said the car was full of fuel, I left her with the car, I think they take it to a car wash ready for the next hire.She must have notice the car was fully fuelled when she drove it away. In the ensuring e-mail interchange the Hertz customer service claimed that their staff reported it empty.I think this is just a try on.