it's the same with cars, if you think about it, so much waste revving at the lights...

vw came out with a golf about 10 years ago that automatically switched off at traffic lights and started again at the touvh of the accelerator.

it didn't sell well, notwithstanding the brilliant innovation, and the benefits to those suffering from respiratory diseases, if that had been made mandatory on ALL cars!

'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty