Car mat thrown on runway (6)
I believe the answer is:
tarmac
'runway' is the definition.
(I've seen this in another clue)
'car mat thrown' is the wordplay.
'thrown' is an anagram indicator.
'car'+'mat'='carmat'
'carmat' anagrammed gives 'TARMAC'.
'on' is the link.
(Other definitions for tarmac that I've seen before include "Airport runway(s)" , "Topping" , "Surfaced area as for planes to take off and land" , "Road-surfacing material" , "something for the road" .)