Autoslash for Lower Rental Rates
Autoslash (www.autoslash.com) is a Website that promises to secure the best deal on car rentals by finding the best coupons, tracking rental rates constantly, and searching multiple vendors. You can also use it if you have already booked a rental car online.
From what I could tell on their Website, the service is confined to the United States, at least at present. Car rental is one of the most opaque areas of travel costs. There are all sorts of rates, and then there is the question of insurance. I often rent cars in the U.S., and have been surprised to find that the collision damage protection provided by my premium credit card is not acceptable at some rental companies. You must also have private insurance on your own vehicle if you wish to decline the often exorbitantly-priced rental car company insurance.
Buying the insurance offered by the rental car company can easily double or even triple in some cases the cost of a car. However, if you are not a car owner, you may have little other choice. Even if you decline to buy the insurance, laws in most U.S. states provide some liability coverage for third-party damages in event of an accident. But without insurance, you could be on the hook for the entire cost of your rental car and other charges if you are involved in a serious accident.
I have yet to book a car rental online (I prefer to prefer to check rates by phone,) but if I ever do I will consider booking through Autoslash for convenience and savings.