Fabric sounding like something driver should carry (5)
I believe the answer is:
khaki
'fabric' is the definition.
(khaki is a kind of fabric)
'sounding like something driver should carry' is the wordplay.
'sounding like' indicates a 'sounds like' (homophone) clue.
'something driver should carry' becomes 'carkey'.
'carkey' sounds like 'KHAKI'.
(Other definitions for khaki that I've seen before include "military-type clothing" , "Dark green colour" , "Military fabric/colour" , "Yellowish brown colour" , "Army dress material" .)