Force acceptance of what motorist must do after work? (5,4)
I believe the answer is:
drive home
I believe this is a double definition.
'force acceptance of' is the first definition.
(as in driving something home to someone)
'what motorist must do after work?' is the second definition.
(driving home from work)
(Other definitions for drive home that I've seen before include "Emphasise - return to one's abode?" , "in the evening rush hour" , "stress a point forcibly" , "What some commuters do after work" , "Return journey" .)