Showed up to take luxury car back to plant (8)
I believe the answer is:
camomile
'plant' is the definition.
(type of plant)
'showed up to take luxury car back' is the wordplay.
'showed up' becomes 'came' (I can't explain this - if you can you should give a lot more credence to this answer).
'to take' is an insertion indicator.
'luxury car' becomes 'limo' (I've seen this before).
'back' shows that the letters should be reversed in order.
'limo' back-to-front is 'omil'.
'came' going around 'omil' is 'CAMOMILE'.
'to' is the link.
Can you help me to learn more?
(Other definitions for camomile that I've seen before include "Herb used for tea" , "Sweet-smelling plant used to make medicine and lotion" , "Fragrant plant" , "Ma, Clio and me have medicinal tea" , "infusion of tea ..." .)