Very good advice. This applies to returning car rentals, too. I had a rental for a week after my '99 Concorde was involved in an accident. The previous renter left her rental agreement in the car.

BTW - the rental was as basic as they come. 2007 Mazda 3 with manual locks, doors, no cruise control, etc. Got sick of driving it and bought a "used" 2005 Crossfire Coupe. It had 35 miles on it!