The biggest share of the world population are the biggest polluters and they won't cut their emissions. We can do our bit but won't make much difference. As for internal combustion engines, they are here to stay. Even Dyson doesn't see any money in electric cars. After the hype, maybe electric cars will be slow to make any impact and may never really catch on. I would like to see the protesters going to China, India, USA, Russia and see how they get on.