What is the fuel mileage of a jet airplane ?

BOA questioned:

What is the cost of the fuel that an aircraft pays ? and What is the fuel efficiency of an civilian aircraft, a cargo aircraft and a fighter aircraft?

Besides fuel efficiency, what are the advantages (for the passenger) of?

Joe.R questioned:

flying on the Boeing 777 versus the?
747? I know that the 747 is wider than any additional twin engine aircraft (which are so in rage now). That is certainly NOT an benefit for the passenger, no matter how you look at it.
Maybe here are some additional compensation that I have not thought of? Are the seats typically more open? The aisles wider? Larger bathrooms? Quieter or smoother ride?
Or is the current trend to use smaller twin-engine aircraft terrible for the consumer in nearly each way?

It’s now the future–where’s my flying car?

sandstone901 questioned:

The year is 2007. It’s now the possibility and I demand to know, where is my flying car? I want my flying car.