We didn't like this Tesla vehicle's storage space (4)
I believe the answer is:
boot
'storage space' is the definition.
(boot is a kind of storage space)
'we didn't like this tesla vehicle's' is the wordplay.
I cannot quite understand how this works, but
'tesla' could be 't' (scientific unit) and 't' is found within the answer.
The remaining letters 'boo' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for boot that I've seen before include "Hard kick; part of car" , "Kick; start (a computer)" , "Dismiss" , "Stout shoe" , "Car luggage space; kick" .)