system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's the process from pressing the gas pedal to your car moving?

I'm a 26 year old guy, and I have no idea what anything under the hood is or does. I was driving today and imagined a little gate opening wider the more I pressed down on the pedal which releases gas into the engine to do... something. Or maybe it stokes a fire to cause the gas to... fuck, what happens?
gpt
Pushing the pedal down opens the throttle, a butterfly valve which allows more air into the engine. The pedal is either mechanically linked to the throttle or linked to the engine management computer which commands the throttle to open. The Carburetor or fuel injector try to maintain constant fuel/air ratio so pump more gas into the engine to balance this extra air. More fuel and more air means more combustion which makes the engine do more work, causing the car to accelerate.