The United States Government owns thousands of vehicles. It maintains huge fleets for each agency to carry out its everyday business, and transport government employees, and government property. There
vehicles can only be legally used for a couple of years before government regulations say they should be replaced. When a vehicle is replaced by a newer model, the older vehicle
by law must be sold at public auction.
The United States Government holds auctions in all fifty states to avoid having to transport vehicles to one central location for auction, because the government has vehicles stationed in every state. When a government surplus vehicle reaches the auction location, it is available for inspection before the auction. Sometimes this is just the morning of the auction, and sometimes it is several days before, check with each auction to be sure. When the bidding starts, it starts very low. Anyone can bid on and buy a car, and it is sold to the highest bidder, no matter how low his bid is.
Most cars sell for several thousand dollars less than what they are worth, and in some cases where there is little competition for that particular car, it can sell even lower than that.
Cars used by the government are not the only thing in the auctions, cars seized from drug dealers also end up in government auctions. Most of these cars are nearly new, and some even have upgrades that cost as much as the car. These seized cars sell for the same low prices as the government cars.