The most expensive bicycle ever sold was a Trek Madone customized by the British artist Damien Hirsch. It went for a half million bucks at a charity auction. While you probably don’t need a featherweight bike adorned with hundreds of real butterflies by a famous artist to join the nearest countryside pedal, there’s no denying that cycling is a gear-intensive sport. It’s also a great way to stay in shape and get some fresh air, or to simply one-up the hybrid set on your way to work.