Go fast to trample the vapour (4,2,3,3)
I believe the answer is:
step on the gas
'go fast' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'trample the vapour' is the wordplay.
'trample' becomes 'step on' (I've seen this in another clue).
'vapour' becomes 'gas' (I've seen this before).
'stepon'+'the'+'gas'='STEP ON THE GAS'
'to' is the link.
Can you help me to learn more?
(Other definitions for step on the gas that I've seen before include "Hurry" , "Drive faster" , "Speed up" .)