Show old vehicle (3)

I believe the answer is:

gig

I'm a little stuck... Click here to teach me more about this clue!

This might be a double definition.

'show old' is the first definition.
'gig' can be an answer for 'show' (I've seen this in another clue). I'm not certain of the 'old' bit.

'vehicle' is the second definition.
(I know that gig is a type of tender)

Can you help me to learn more?

(Other definitions for gig that I've seen before include "Live musical performance" , "In pop parlance, a one-night performance" , "Date" , "One-night stand" , "A one-night musical performance" .)

I've seen this clue in The Times.

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