Luxury car plant (5)
I believe the answer is:
lotus
This clue might be a double definition.
'luxury car' is the first definition.
'lotus' can be an answer for 'car' (I've seen this before). I'm not certain of the 'luxury' bit.
'plant' is the second definition.
(lotus is a flowering plant)
Can you help me to learn more?
(Other definitions for lotus that I've seen before include "F1 team and car maker" , "We forget having eaten this" , "Sacred waterlily" , "Sacred symbol" , "Type of water-lily" .)