. Semantics. I agree with Kiril, he's absolutely correct, but let me add to his point. The "Alternative" moniker in and of itself is meaningless, here's the real question... is it a "green" fuel -as in non polluting and renewable- or not? Plutonium could be considered 'alternative' but we all know it would be a joke to include it on such a list, and clearly propane is not either. Regardless of what our fine, corporate sponsored gov't says. All that out of the way, I am very interested in propane as an alternative (there's that semantic trap again ) to fossil fuels. If only because the options in our industry are so slim, which I think it's a disgrace btw. We are the 'green' industry and I think we should leading in this area, so.... anything that is somewhat less polluting, it's ok in my book. I consider it a small step in the right direction. Off of my soap box now. .