al

The people who have eaten entire cars and the like have cut them up into rounded chunks the size of a large BB with a blow torch. The advantage of this approach is that you can use the torch to fire polish off the sharp edges.

There is never enough fiber in one's diet -
so I recommend a carbon-fiber bike, like a Trek OCLV, for example. And of course there are all kinds of accessories made of said compound: handlebars, cranks, seats, seat posts, forks, wheels, but sooner or later you're going to have to deal with the chain. You could do it sword-swallower style. Oh - and the bike will be very expensive - carbon fiber may be easier to digest than aluminum or steel, but it's pricey!!!
Good luck.

Oh, and you will probably die.

[Edited on May 04, 2003]