An electric car (4)
I believe the answer is:
tram
I believe this clue is a double definition.
'an electric' is the first definition.
(thesaurus)
'car' is the second definition.
(as in a tram car)
(Other definitions for tram that I've seen before include "Road vehicle running on tracks" , "Old city transport, ram on rails through streets" , "Take it to the mart" , "Bus on rails" , "The Luas, say" .)