floor it
Verb
Meaning
(idiomatic, automobiles) To depress the accelerator to the maximum extent.
(idiomatic) To move (run, ride etc.) at full speed.
Source: en.wiktionary.orgSynonyms
step on it
redline
barrelling
barreling
vehiculate
blast off
put the pedal to the metal
fang it
put pedal to the metal