Hollow area poor driver ends up in — he leaves it (6)
I believe the answer is:
trough
'hollow' is the definition.
(thesaurus)
'area poor driver ends up in he leaves it' is the wordplay.
'area poor driver ends up in' becomes 'the rough' (golf term - golfers 'drive' balls).
'leaves it' is a deletion indicator.
'therough' with 'he' taken out is 'TROUGH'.
(Other definitions for trough that I've seen before include "Hollow; channel" , "Farm food container" , "Feed manger" , "Channel; low point" , "Pig swill container" .)