Calling the Voyager fuel card program unmanageable and uneconomic, the USPS Office of Inspector General recommends that the Postal Service use another method to manage fuel under its HCR contracts. In its advisory report dated September 30, 2014, the OIG concludes that the Voyager fuel card program has cost more money that it saved and discourages fuel efficiency. The Postal Service spent $5.1 billion for 1.6 billion gallons of fuel for Highway Contract Route (HCR) contracts under the program over the last nine years.