Vehicle maker in decline — that’s true, according to reports (10)

I believe the answer is:

wainwright

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'decline that's true according to reports' is the definition.
I can't tell whether this defines the answer.

'vehicle maker' is the wordplay.
'vehicle' becomes 'wain' (wain is a kind of vehicle).
'maker' becomes 'wright' (I've seen this before).
'wain'+'wright'='WAINWRIGHT'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for wainwright that I've seen before include "craftsman" , "wagon builder" .)

I've seen this clue in The Times.

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