It is possible but pretty expensive input costs. I think with subsidies (money from land fill use) we could make it closer to the retail price – The future prediction for fuel is tricky – but I suspect it will become suddenly expensive when number of petrol cars starts to dwindle and the volumes required to cost effectively make petrol becomes problematic. less volume will also be come problematic to transport. So I can imagine a point in the future where petrol will hit $10 a gallon and its availability will be come increasingly problematic. I predict some point in the 2030s with UK being the the first to hit that price and China and europe hitting that price some point after that. The US will probably be 10 years after that.