Bases,I just bought a car for my daughter l'box at the GSA auction.They are all over the country.On Wed I watched 300 US Goverment cars auctioned.
I bought a 2000 Dodge Stratus with 20,000 miles on it for $ 5,200.It's in mint condition.
The goverment sells thousands of cars each week.I think there is one up in the Buffalo area every so often.
I'll give you the GSA site.
Most Dodge Stratus's sold from 3,500 to 7500.I saw about 10 Dodge Durango's go for 10,000-13,000.They had about 50,000 miles on them but my brother-in-law paid over $30,000 for a new one 2yrs ago.
You can't beat the price of GSA cars.Problem is dealers also can bid on them.Most of the Dodge Stratus's were owned by army,navy,air force recruiters.They have to be maintained with iol changes,etc. Carfax.com can give you a history of the car.The car I bought was maintained in NYC.Got 4 oil changes,no accidents,etc
Look on the site and see how close they are to you.
http://autoauctions.gsa.gov/formprocess.cfm
Good luck...