Prison car turned into material for recycling (5,4)
I believe the answer is:
scrap iron
'for recycling' is the definition.
(I've seen this before)
'prison car turned' is the wordplay.
'turned' is an anagram indicator.
'prison'+'car'='prisoncar'
'prisoncar' with letters rearranged gives 'SCRAP-IRON'.
'into material' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for scrap iron that I've seen before include "Waste metal for melting down" , "Discarded metal" , "for recycling" , "rubbish" .)