Moved very quickly (4)
(Other definitions for sped that I've seen before include "was 8 [FLEET]" , "got a move on" , "Went fast" , "Raced, hurried" , "Travelled quickly" .)
'moved very quickly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tore that I've seen before include "Ripped; went quickly" , "Was moving very quickly" , "Ripped, ruptured" , "Ripped by rote" , "came apart" .)
(Other definitions for thru that I've seen before include "drive, avoiding street" , "Until the end of (US)" .)