Uncreep the thread! It has been claimed that the single action which would have most impact on reducing emissions and consumption of fossil fules, at least here in the UK, would be for more people to work at home.
This could reduce road use by up to 25%
Government incentives may be needed in order to convince businesses that it works!
I would welcome this, because I drive a lot of miles (currently 80 per day, and often more) just to arrive at a desk to use a PC for work that I could do quite well on my own at home. And as a freelance, I sometimes have to work several hundred miles from home.