i always thought gas was controlled by the "depth" of the GAS pedal, not the rotations of the engine ![Huh ???](http://www.getbig.com/boards/Smileys/classic/huh.gif)
not being a dick, honest question
Both are a factor, but the engine will only use what it needs to spin the wheels.
You could press the gas pedal lightly in 2nd gear at 30mph for 1 mile, and the revolutions would be high = more gas needed to spin the wheels.
You could press the gas pedal harder in 4th gear at 30mph, and the revs would be far lower so the engine uses whatever gas it needs to do the job - LESS GAS.
This is why cars have fuel injection rods, so they can supply the engine with what it needs to burn.
Otherwise where is all the unwanted gas going when you floor the pedal uneccesarily? leaking out of the hood lol.
Good question though.