 They found they've done studies over in Europe, and Europe's really good. They've been doing a really good job on their engine. In fact, International created an engine with, you know, it's been 10 years they've been testing it over in Europe, but the air that comes out of that stack, it takes the dirty air out of the air, out of the atmosphere, runs it through the engine, and when it comes back out through the pipe, it's cleaner than what it is in the atmosphere. Hmm.