@ wiggers - True, I should perhaps have said promote / push for, rather than imply that it would be solely up to the Government to do all the investing. As vehicle manufacturers have at last woken up to the development of electric / hybrid cars and lorries, one can only hope that with the right prodding they will take up the challenge and all rush in to take their market share in the new tech application of moving heavy stuff around. It's the Green electricity generation bit that needs a far far far greater push in the right direction, perhaps if vehicle manufacturers provide that growing vehicle investment, they will also put funds into generation. (No, too idealistic perhaps).