2005 Porsche Carrera GT

An arrogantly drawn, over-muscled supercar that recalls the great midengine German racecars of the 1930s. It still looks like a Porsche, but one that's been gulping HGH and hanging with Arnold at Gold's Gym.

1950 Mercury

One of the first, sleek postwar envelope designs that eliminated running boards and tucked everything within a single clean shape. Of course, it looked even better when it was chopped and lowered.

1970 Chevrolet Chevelle SS

Quad headlights, a bifurcated front grille that today's Chevys imitate, fenders that bulge over white-letter tires, a giant rear chrome bumper and two of the greatest hood and deck stripes ever drawn. For many, the ultimate GM muscle car.

1956 Lincoln Mark II

It looks as if it's carved out of marble. Slab sides, a grille big enough to swallow Oregon, a roof that looks like a top hat, and of course a tire bump on the deck lid. Cost $10,000 back then, looks like a million bucks today.

1985 Chevrolet Camaro IROC-Z

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Wearing spectacular 16-inch wheels, adorned with hood strakes and finished with a small spoiler, it's the third-generation Camaro still worth coveting. The most timeless American shape to come out of the 1980s.