On Tue, 09 Dec 2003 05:16:56 -0500, Harry Krause
wrote:

Fascinating! Now...an engine that runs on used kitty litter...that's
what the world needs.

If used kitty litter burns, there are engines that will run on it.
External combustion engines though, like steam, stirling, or the wally
minto wonder wheel. Just don't keep it upwind.

Steve