Put the pedal to the metal
Possible interpretation: Go as fast as possible.
Origin: This saying originates from the idea of pressing a car's accelerator pedal down hard to the (metal) floor, thus making the car go at maximum speed.
Variety: This is typically used in American English but may be used in other varieties of English too.
If you "put the pedal to the metal" you will
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Contributor: Josef Essberger