Reverse stylish vehicles (5)
I believe the answer is:
trams
'vehicles' is the definition.
(tram is a kind of vehicle)
'reverse stylish' is the wordplay.
'reverse' says the letters should be written in reverse.
'stylish' becomes 'smart' (similar in meaning).
'smart' in reverse letter order is 'TRAMS'.
(Other definitions for trams that I've seen before include "Not seen in London" , "public transport" , "People movers" , "silk yarns" , "old vehicles" .)