Twins placing car behind empty garage (6)
I believe the answer is:
gemini
'twins' is the definition.
(I've seen this before)
'car behind empty garage' is the wordplay.
'car' becomes 'mini' (Mini Cooper).
'behind' says to put letters next to each other.
'empty' says to hollow out the word (remove centre letters).
'garage' with its middle removed is 'ge'.
'mini' put after 'ge' is 'GEMINI'.
'placing' is the link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for gemini that I've seen before include "Sign of the Twins ( 6)" , "Twins star-sign" , "Twins star sign" , "Zodiac sign - the Twins" , "May person" .)