Is A Green Mobility Scooter Really Green? Transport is the second-largest source of greenhouse gas emissions. But are shared dockless electric scooters really green? Scooter startups such as Tier, Dott, Voi and Circ all claim they are. We questioned them about their sustainability plan. Here's what they said. Dott's warehouses https://www.mymobilityscooters.uk/brands/green-power