https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft gives some numbers: > For a comparison with groun

https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft gives some numbers: > For a comparison with ground transportation - much slower and with shorter range than air travel - a Volvo bus 9700 averages 0.41 L/100 km (570 mpg‑US) per seat for 63 seats.[113] In highway travel an average auto has the potential for 1.61 L/100 km (146 mpg‑US)[114] per seat (assuming 4 seats) and for a 5-seat 2014 Toyota Prius, 0.98 L/100 km (240 mpg‑US). and a Airbus A320neo has a fuel efficiency per seat of 1.94 L/100 km (121 mpg‑US) It all depends on the load factor.