Drive home after Scarlet Pimpernel starts (4)
I believe the answer is:
spin
'drive' is the definition.
(I know that spin is a type of drive)
'home after scarlet pimpernel starts' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'after' says to put letters next to each other.
'starts' indicates taking the first letters.
The first letters of 'scarlet pimpernel' is 'sp'.
'in' after 'sp' is 'SPIN'.
(Other definitions for spin that I've seen before include "Political bias" , "Rapid revolution" , "Fish" , "Slant put on news etc" , "Turn round quickly" .)