This machine is zero-carbon in use, and little carbon is emitted as a result of manufacture and maintenance, yet it will carry both you and your luggage reasonably quickly and without unreasonable effort (being around 95% efficient). In terms of greenhouse gas emissions, it's pretty much unbeatable as a form of transport. In the fight against climate change, it's a main battle tank. This image comes from the Lexikon der gesamten Technik (dictionary of technology) from 1904 by Otto Lueger.
