Hello!
> Well, except I suppose it's based on the 555 seat version that Airbus uses.
> What if you put all 850-odd seats in and fill 'em up? A quick bit of maths
> suggests it'd be below 2 litres/100km. No car on Earth would get anywhere
> close.
Most European cars can seat five and have a fuel consumption below 10 litres per 100 kilometers. So even if you don't count the driver, you will get about 2 l/100 km/seat. Some cars like the four-seater Volkswagen "3l Lupo" burn only 3 l /100km (therefore the designation...) which gives one liter / 100km / seat (driver not included).
Greetings, Max