Is A Green Mobility Scooter Really Green? Transport is the second-largest source of greenhouse gas emissions. But are shared electric scooters with docks really green? All scooter startups, including Tier, Dott and Circ, claim to be. We inquired about their sustainability plan. Here's what they had to say. Dott's warehouses https://www.mymobilityscooters.uk/brands/green-power