Who ever said AGW was ever purely the 'A' part? In fact a large part of the argument has been the 'A' bit may trigger a large natural release of CO2/methane. Also a number of studies have said man made air borne soot has reduced warming.
Then you proceed to contradict yourself - after saying 'I'm not disputing the fact that global warming is or isn't happening' .... You then say 'The worlds population is contributing to this "global warming" but in such a low percentage that it won't make the end result any different.'
So you are not disputing that global warming is or is not happening but you personally 'know' that the worlds population IS contributing to this warming. Then somehow you also 'know' its so small that the end effect is nil - whatever the 'end' is :-)
I agree we need more efficiency regardless of GW using limited resources efficiently always makes sense. But again there is a large amount of certainty in your assertion that battery cars are not the way forward, but most people make short journeys and we have a means of charging battery cars. Contrast that to hydrogen which is extremely dangerous stuff when not transported properly and anyway there is no distribution network available.
Maybe we need you on the ITER project to kick some ass and get them to 'sort' it asap - those bloody lazy scientists obviously spend all day whining its too hot and need to get down to some serious work.
But then your final comment makes it seem that you are a tin-foil hat wearing nutter as the 'boys' from the AGW or battery car brigade will come and sort you out if you are not anonymous. So maybe not the best person to lead us into a fusion future.