Every used car is unique, but some are a little more special than others.

Case in point: The Aston Martin DB5 used in the 1965 James Bond film "Thunderball." The classic DB5 would likely fetch a high price at a used auto auction, but this car comes with a few classic Bond gadgets that make it the ultimate collector's item.

Two machine guns on the front actually fire blanks, sure to intimidate anyone on the road. Some of the car's other features include a revolving license plate, bullet shield, nail spreader, tire shredders and radar navigation that puts modern GPS to shame. There's even an ejector seat (that doesn't work).

American radio station magnate Jerry Lee has owned the car since 1969, when he bought it straight from the Aston Martin factory for $12,000. Now, it's expected to fetch $5-$7 million dollars at auction.

A 1998 Jaguar XKR modified for "Die Another Day" is expected to go for substantially less.

Drivers don't have to be millionaires to afford a luxury used vehicle. In fact, buying used can be a great way for buyers to get a good deal on a luxury brand like BMW or Mercedes.