Imbecile parking Ford in the middle o' Japanese city (7)
I believe the answer is:
sapporo
'japanese city' is the definition.
(I've seen this before)
'imbecile parking ford in the middle o'' is the wordplay.
'imbecile' becomes 'sap' (I've seen this before).
'parking' becomes 'p' (abbreviation on road signs).
'in the middle' indicates the central letters.
The middle letters of 'ford' are 'or'.
'sap'+'p'+'or'+'o'='SAPPORO'
(Other definitions for sapporo that I've seen before include "Japanese city" , "City of northern Japan - apropos (anag)" , "Japan site of nineteen seventy two Winter Olympics" .)