Pull a vehicle back in races against time (7)
I believe the answer is:
attract
'pull' is the definition.
(attracting is a kind of pulling)
'a vehicle back in races against time' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'back' is a reversal indicator.
'in races' becomes 'tt' (Isle of Man Tourist Trophy races. I am not sure about the 'in' bit.**).
'against' is a charade indicator (letters next to each other).
'time' becomes 't'.
'car' in reverse letter order is 'rac'.
'rac' after 'tt' is 'ttrac'.
'a'+'ttrac'+'t'='ATTRACT'
(Other definitions for attract that I've seen before include "Draw to oneself" , "Allure" , "Lure" , "Act as a magnet" , "Draw, pull" .)