Don't let its age fool you — the 1955 Mercedes-Benz 404 Unimog is still one of the toughest vehicles on the road. Currently located in SoCal, this unique specimen — it was the fourth to roll off the assembly line, and one of only 1,210 produced in the series — is available in as-is condition, or as a fully-restored, better-than-new vehicle. Spec-wise, it offers portal axles, differential locks on both the front and rear, shift-on-the-fly 4x4, a M180 MB gas engine, a low center of gravity, and 17 inches of minimum ground clearance that, when combined with the virtually non-existent front and rear overhangs, gives it the ability to handle approach and departure angles of more than 45 degrees. It's pretty much the beastliest vintage ride you're going to find short of buying a tank.
Perhaps one of the most beautiful automobiles ever created by the Italian luxury carmaker, the 1955 Maserati A6G/2000 Spyder ($4.5 million) is a picture of automotive elegance. One of the only convertibles ever produced in this model, the car features a two-liter straight six producing 180 brake horsepower. This particular car has been lovingly restored to its original condition, with beautiful paint and bodywork, as well as an immaculately-appointed interior. The car was originally built in very limited numbers, and manufactured by a variety of Italian coachbuilders — while this one in particular was constructed by the legendary Carrozzeria Zagato.