Driver's ideas about bank (9)
I believe the answer is:
riverside
'bank' is the definition.
(I know that riverside is a type of bank)
'driver's ideas about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'RIVERSIDE' is hidden within 'drivers ideas'.
(Other definitions for riverside that I've seen before include "Bank" , "Area along, say, the Thames" .)