When I booked for a rental car thru Travelocity.com, they did not mention that the car rental company in question, (most major car rental companies in Illinois) require a valid CREDIT CARD issued by a major US Bank in order to rent a car anywhere other than at the airport car rentals (even at the airport, one needs a return ticket to book cars using a debit card instead of a credit card). This information was concealed or overlooked when I booked at car at Travelocity.com and they gave me price and charged me $70 for car insurance for a weeks worth of car rental. On my visit to the local car rental (National car rental) to pick up the rental car, they refused to honor the reservation / booking made with Travelocity and refused to rent a car using my debit card instead of a credit card.
Travelocity would not take any responsibility for National car rental's refusal to rent me a car without a valid credit card and rejected my Debit card for payment.