A very boring man on my street drives a Mitsubishi Hybrid and waffles on about its 145 MPG range (Piffle) The daft bugger sets off in winter and if he is on battery only mode, he has no lights on, no heated seats on, no heater or heated screen on. In summer (remember that) he sets off on the odd sweltering day on electric mode with no lights on and no air con on ! He has to have the windows down and then he is dragged back, literally. When he blew he's car's trumpet he looked aghast when I put it to him that if we assume the national electricity supply's main purpose is not to charge up his cars huge battery's, it is to power Homes,Schools, Hospitals, Factories and the like. Accepting that assumption then when he does charge his car up it is safe to assume that substantial charge of electricity is courtesy of a coal fired power station as all the lovely green produced stuff has been used by the essential users not chummy in his Mitsu.