Water is probably just as important, too valuable to use for fuel I woulda thought someone from South England would know that, aren't you in a hose-pipe ban? :P But yeah I get your point you're making But more renewable sources of fuel would still require a lot of people to make/process/whatever it. Take for example Ethanol, it could improve the agricultural economy and there still is a production stage to be done. Where you would lose some jobs when oil goes, more jobs would be created with the new fuel.