Crossword Genius

Force vehicle to speed up after Petty Officer left in charge (6,3)

Ross

I believe the answer is:

police car

I'm a little stuck... Click here to teach me more about this clue!

'speed up after petty officer left in charge' is the definition.
I can't judge whether this definition defines the answer.

'force vehicle' is the wordplay.
'force' becomes 'police' (police force is a kind of force).
'vehicle' becomes 'car' (car is a kind of vehicle).
'police'+'car'='POLICE CAR'

'to' acts as a link.

Can you help me to learn more?

(Another definition for police car that I've seen is " Panda possibly".)

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