[Smokin' Joe]

But they could just as easily -- and in many cases, more easily -- be made from any other organic substance.

Of course. There are alternatives, after all.

The current method may be cheaper and simpler, and some manufacturing adjustments would have to be made, but we could always have the ladies chuck the lycra and the spandex and bring back the whalebone corset...

[IronJack]

Or we could step in the 21st century and stop using a dirty, polluting substance that was only used for fuel originally because it was so easy to get to, and that isn’t all that great as a raw material for organic derivatives.