But it’s emerged 2 big companies, Volkswagen and Toyota, haven’t signed up to a summit promise to only sell zero-emission vehicles by 2040.
There's a new strategy for low carbon transport, including zero emissions trucks and ships, and global expansion of electric vehicles.
The Cop26 summit in Glasgow is focussing on travel and reducing climate changing greenhouse gases.
Aviation's one sector that's found it tough to adapt, but Heathrow-based British Airway's boss Sean Doyle insists the industry's making progress.