[fallingknife]

And I nit pick your cherry pick on the grounds that 1000x miles * 5.2x efficiency ratio only gets you to 5200x, far short of 10K

[paulddraper]

An F-150 has better gas mileage than a F-250.

[jojobas]

Planes emit their crap at a higher altitude which somehow makes a greater impact or so I hear.