Everyone's so focused on the green crap that they forget
It's not all about going green. It's about getting out of a dependence on a finite energy source. Oil will not last forever with some estimates giving it 30-35 years at our current and rapidly growing rate of global consumption. Some things will be incredibly difficult to take off of oil but the automobile is a complete possibility. Sure there isn't an infinite supply of coal or uranium either but that's why we'r ealso working on renewable sources of fuel. Oil will run out sooner than anything though and it'd be nice to get the world off of that before that day comes.