Is A Green Mobility Scooter Really Green? The transport sector is the second-largest emitter of greenhouse gases. Are shared electric scooters dockless really green? Scooter startups such as Tier, Dott, Voi and Circ all claim to be sustainable. are. We questioned them about their sustainability strategies. Here's what they said. https://www.mymobilityscooters.uk/brands/green-power