https://www.theguardian.com/technology/2019/aug/02/electric-scooter-eco-friendly-greenhouse-gases

Materials used in manufacturing and companies’ efforts to collect and charge scooters create significant greenhouse gas emissions

At first glance, the assertion that dockless electric scooters are more environmentally friendly than other modes of transportation seems sound. They don’t emit greenhouse gases. They don’t add to vehicle congestion. “Cruise past traffic and cut back on CO2 emissions – one ride at a time,” touts Bird, one of the most popular scooter companies in the US.