This kind of project would be really helpful in developing countries like India. People don't want to spend a lot of money just to save the environment. They wi

This kind of project would be really helpful in developing countries like India. People don't want to spend a lot of money just to save the environment. They will, however, use something like which does not cost much and will return quickly in fuel cost savings. But one has to figure out how to do that on a massive scale, keeping costs down, with thin margins and a lot of capital investment.