Around 2.4% of global CO2 emissions come from air travel, and the industry is responsible for around 5% of global warming. With this in mind, Hybrid Air Vehicles revealed the concept designs for Airlander 10, a 100-seat aircraft that is predicted to operate with 75% fewer emissions than a conventional airplane, and aimed for to city hopping.
https://mymodernmet.com/airlander-10-hybrid-air-vehicles/