For the gas cars, did they also take account of the emmissions/polution from the oil rigs/refineries/gas stations etc? For the coal plants, did they take account of extraction of the coal? Because if we're bringing infrastructure into the equation, where do we draw the line?

I note that in the UK, its very easy for consumers to specify that their house be supplied with renewable energy. Looks like it doesn't work that way in the US.