History of dad's old model car (4)
I believe the answer is:
past
'history' is the definition.
(I've seen this before)
'dad's old model car' is the wordplay.
I cannot quite see how this works, but
'dad's' could be 'pas' (pa can mean someone's father) and 'pas' is present in the answer.
'model' could be 't' (Ford Model T car) and 't' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for past that I've seen before include "Beyond" , "The time that has elapsed" , "A person's earlier life history" , "Ended" , "Yesteryear" .)