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Originally Posted by TriKKy
You will notice this on any car that is throttle-by-wire.
Basically, a computer is accelerating for you. If you ever want to test what kind of system is in a car you are in...stick it in cruise control....if the pedal moves with changes in incline, it is standard, if the pedal is all the way up all the time you have drive by wire.
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This is not a good indication, on my old (80s) bimmers, the throttle stayed at the top even though they are definitely NOT throttle by wire. Basically, the gas pedal spring was independent of the cruise control spring, so if one was engaged the other one goes to a throttle closed position.