Short Hops By Balloon?

Considerably after (and safer than?) the Zeppelin, airships are being offered as a solution to reduce the carbon footprint of short haul flights (https://www.theguardian.com/world/2021/may/26/airships-for-city-hops-could-cut-flyings-co2-emissions-by-90). Most of the carbon dioxide produced by an aircraft, is generated on take-off and landing. This makes short haul flights especially problematic, in terms of their impact on global heating and climate change. A company, Hybrid Air Vehicles, in Bedford, is building the 100 passenger Airlander 10 airship. The airship would produce only 10% of the emissions associated with a short haul aircraft flight. Services are planned, for example, between Liverpool and Belfast. Airlander 10 flights have been likened to a fast ferry service (without the high emissions of shipping and requirement for a dock). People might well be prepared to exchange some speed for remaining green.