Nor does the prospect of the Holden VF Series II SSV Redline being sold for a six-figure sum make him want to reduce his collection.

Mr Carlton, who has been buying Holden and Ford vehicles for about 25 years, would like to see the auction item remain in Australia but it doesn't get his motor going.

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"The Holdens are not the same now as compared to when they used to make them with steel bumper bars," he said.

"They were made better years ago and had a nicer design."

American-based company General Motors pulled the plug on 69 years of manufacturing of Holden vehicles in Australia in October 2017.

Lloyds Auctions, in charge of selling the car on Saturday, tells of the "ever-increasing race to capture Holden vehicles and the nostalgia that rides with them" since the shutdown.

"We have seen a huge demand for Holden vehicles particularly HSV since the closure of Holden and we encourage anyone who might be looking to sell their vehicle to give us a call right now," chief operations officer Lee Hames said.

He said the interest in the last Holden ever framed, stamped and painted in Australia was "phenomenal".

The car, built in October 2017, has travelled 102 kilometres and is in the "same original, showroom condition".

".. we have had inquiry from collectors, investors and Holden enthusiasts from all over the country," Mr Hames said.

"Phones are ringing off the hook night and day.

"We start all auctions at $1. There's no precedent for price on this car as it is just so rare.

There will never be another last Holden, but it certainly wouldn't surprise us if it achieved a strong six- figure result."

Mr Carlton's collection of nine cars includes a 1969 HK Monaro for which he paid $3000.

"It would be worth six figures," he said with a laugh.

But the Dubbo father of two and grandfather of five intends never to sell his collection.

"We just love our cars more than anything," he said.

"I think our kids have sorted out who's getting what."