Simple dwelling but home lacking vehicle (3)
I believe the answer is:
cab
'vehicle' is the definition.
(cab is a kind of vehicle)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for cab that I've seen before include "Driver's compartment, in lorry say" , "It has the authority to confiscate the proceeds of crime, in short" , "Organisation to collect money made from crime" , "Hired car" , "A taxi in America" .)