Have you ever noticed that these alternatives to gas/diesel always take up a lot of space to do? They certainly aren't a compact system. At least not in the terms of living in a campground/RV park/mobile home park in a tiny footprint. Either the conversion equipment takes up a lot of space or the storage of the pre-product takes up a lot of space or you have a substantial amount of by-product to get rid of. Something that is often difficult to achieve in a campground/RV park/mobile home park.