Spy useful tips when driving about small parts? (9)
I believe the answer is:
molecular
'useful tips when driving about small parts?' is the definition.
I can't tell whether this defines the answer.
'spy' is the wordplay.
I cannot really see how this works, but
'spy' could be 'mole' (mole is a kind of spy) and 'mole' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for molecular that I've seen before include "Dealing with small particles" , "Relating to the smallest particles of a substance" , "Relating to groups of atoms bonded together" .)