Vehicle, standard, with a criminal initially inside (5,3)
I believe the answer is:
panda car
'vehicle' is the definition.
(type of police car)
'standard with a criminal initially inside' is the wordplay.
'standard' becomes 'par' (standard of play in golf).
'with' becomes 'and'.
'a criminal initially' becomes 'ac' (I can't justify this - if you can you should give a lot more credence to this answer).
'inside' means one lot of letters goes inside another.
'and'+'ac'='andac'
'par' enclosing 'andac' is 'PANDA CAR'.
Can you help me to learn more?
(Other definitions for panda car that I've seen before include "station wagon?" , "Police vehicle" , "One patrolling" , "In official vehicle" , "Something with copper inside?" .)