Stuart, their contribution is vital. Can consumers do it alone? No, but without the will of consumers, the shift to electric cars will not take place. Within a few years it can be very unfashionable to own a gas car. Alon Musk was instrumental in this change by making fashionable electric cars.
Countering climate change is absolutely doable and it's consumers and the public that ultimately can make it happen by their purchases and the politicians they vote for.
Many thanks