Greeting a group of men in Korean car (3,3)
I believe the answer is:
kia ora
'greeting a' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'group of men in korean car' is the wordplay.
'group of' becomes 'a' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'men' becomes 'OR' (military abbreviation for Other Ranks).
'in' means one lot of letters goes inside another.
'korean car' becomes 'kia*' (I've seen this before).
'a'+'or'='aor'
'aor' going within 'kia' is 'KIA-ORA'.
Can you help me to learn more?
(Another definition for kia ora that I've seen is " Toast of New Zealand".)