London already has 650 zero emission buses.
https://www.intelligenttransport.com...lectric-buses/
The Dart has nothing to do with being green but as another enabler for a second terminal. The first enabler was the phoney planning application for a business park that had a then mysterious £125m dual carriageway serving it. Most of the business park plan has been replaced by the infrastructure needed for a second terminal but importantly the road is now outside the DCO, as it has already been approved.
Since approval the Council can’t make a business case to get the road built to serve a mini business park. In fact they couldn’t make a business case for a full sized business park because the road was planned for a second terminal but they can’t admit it. It is my opinion that they abused the planning system so they could approve this road.