What is the most expensive bicycle in the world?

Courtney bought her friend Jennifer Aniston a shiny new designer $12,000 one-of-a-kind Chanel bicycle after Aniston expressed an interest in hitting Los Angeles' bike lanes.

According to "a source," "Jennifer said she wanted to start bike riding because it's such good exercise.

So Courteney sent her the new, ultra-chic Chanel bicycle."

The bike features eight speeds, weighs 36 lbs and comes complete with a quilted leather seat and saddlebag emblazoned with the famous Chanel 'CC' logo.

Although the Chanel bike features fenders and a chain guard, Chanel last summer also introduced jeweled pant clips to keep your pants from getting caught in the chain...

On October 20 2005 at the Lance Armstrong Foundation Gala an anonymous buyer purchased a Madone 5.9 SL that was donated by Trek and jeweler Alan Friedman. The bicycle is covered with gold and man-made diamonds and sold for $75,000.00 USD making it the world's most expensive bicycle.

Like the aero-enhanced Madone that preceded it, the Trek Madone SL is another Trek bike that was born from a specific request by Lance Armstrong. Lance first used the Trek Madone SL to win the Tour de France in 2004.

Last year, the Madone was the official "team bike" and the Trek Madone SL was retained specifically for those riders designated as "climbers" who need the lightest bike available.

The Madone SL differs from the aero-enhanced Trek Madone by virtue of the round-shaped seat and down tubes. By using round tubes versus the aero-shaped tubes, the bike is almost 100 grams lighter.

Besides the crucial role the Madone SL played in the mountains of France, it was also the bike used by Paolo Savoldelli to cement his overall win at the Giro d'Italia.

The world's most expensive production bicycle we could find was the Bernard Hinault bicycle with prices ranging from $7,885 to $10,660 and you have to pick it up in Bretagne, France but they do cover the airfare...

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Artist Marcel Duchamp created 'readymade art', basically a bicycle wheel on a stool, in 1913. Today it's worth about $3 million, definitely the world's most expensive bicycle wheel.