The good thing from my perspective is that nobody puts any pressure on me to say what it's going to be. The backers accept that they don't know what they are going to get.
I was recently looking at what they can actually do to reduce consumption of petrol. It would be quite possible to build automobiles out of carbon fibre that would be just as strong, weigh 10 times less and consume 10 times less petrol.
The damage done in one year can sometimes take ten or twenty years to repair.

