One of the best ways to recoup an investment in a hybrid car is to buy used. An even better way to save money faster is to buy a used, high-quality car from a rental car agency. Hertz Car Sales (hertzcarsales.com) is just one site that lets you search the make, model, color and fuel efficiency of its fleet. You can try out the car for three days at a low rental price to decide if you want to buy the car. Ask your local car rental companies about their resell program. If they don't have the car you want, ask them to put you on a waiting list and to notify you when one becomes available.