While it won't go over with the biking cognoscenti who prefer a polished Italian-made drivetrain, the occasional leisure cyclist may find this a fun toy along the lines of the suitcase bike.
Hammacher Schlemmer is selling a chain-free 3-speed called the Belt Drive Bike for $500
As it says in the name, the bicycle has a lube-free Kevlar belt in lieu of a bike chain. The company claims that its lightweight and grease-free belt system needs no tension adjustment, and will not slack or slip.
Ergonomic adjustable 9-inch seat, 19.75-inch aluminum frame, and 26-inch tires with stainless steel spokes and alloy hubs and rims make up the rest.Might be a cute bike to leave at your parents' summer house...Or your own summer house for our dot.com millionaire readers out there.
You can always get some spokey dokeys or a deck of cards and a clothespin to make your bike sing while it charges down the hill.
If, alas, there is no summer house anywhere in your orbit, then you probably don't need to spend $500 on a non-slacking bicycle just to tool around on.