Room for a car (6)
I believe the answer is:
saloon
I believe this clue is a double definition.
'room' is the first definition.
(I know that saloon is a type of room)
'for a car' is the second definition.
(I've seen this before)
(Other definitions for saloon that I've seen before include "Car with separate boot" , "Boozer or shape of car" , "Large public room" , "Bar or shape of car" , "Bar room" .)