Sat in the car, retweet about housing row (7)
I believe the answer is:
terrace
'housing row' is the definition.
(a row of houses)
'sat in the car retweet about' is the wordplay.
'sat in' says the answer is hidden in the clue.
'about' says the letters should be written in reverse.
'ecarret' can be found hidden inside 'the car retweet'.
'ecarret' reversed gives 'TERRACE'.
(Other definitions for terrace that I've seen before include "From which spectators watch" , "flat roof" , "Veranda" , "Flat area (on slope)" , "Patio" .)