Indeed. Economy is important to me too and economy equals range which is very important also. You can't change the world but you can change yourself and travel does that. If you're interested look up "brown's gas". It's low grade hydrogen from water by electrolysis. It's not enough gas to power the bike (yet, although people claim to have achieved that) but it does possibly make a difference of around 10 to 20%. This technology requires catalysts so is not particularly efficient yet. It's fairly well proved and water kits are even available to buy on ebay. I would recommend doing your own research and experimenting carefully on a proven machine you are familiar with if this is something that interests you. My opinion, for what it's worth is this stuff is still not efficient enough for travel but it's interesting stuff to look into.
What I want is an LPG tank on my bike. It's not common in the UK yet but is much more so elsewhere. It's literally half price fuel although you lose a bit of performance and efficiency. I have an LPG car and this stuff works very nicely. On an enduro bike with a single exhaust you tend to have a natural gap the other side ideal for a pressurised tank of liquid gas. It wouldn't give massive range but it would save money and lots of it and offer redundancy while traveling.