Staff at the Great British Car Journey museum have asked for help in solving the mystery behind a pristine, 50-year old Vauxhall Victor FE.
The museum bought the car following the death of its owner, Mr Milner, with fewer than 100 miles on the clock.
The museum in Ambergate, Derbyshire, said the car had been coated in oil, bagged up and the interior was covered in polythene, which helped to preserve its condition.
They also know that Mr Milner took the car to Derby for Ziebart rust proofing around six years after he bought it.
It was found in an isolated building on a piece of land owned by Mr Milner after he died and, after it was sold to a collector by executors of Mr Milner's estate, it was then bought by the museum.
A range of spare parts, petrol storage containers and a Haynes manual were all found in the boot of the car.
With no family or friends to ask, the museum is hoping those who lived nearby at the time may be able to provide some information.
Richard Usher, founder and owner of the Great British Car Journey, said: "We would love to know more about this Victor and why the owner never used it. It really is a one of a kind story that we're desperate to know more about.
"If the name of Mr Milner or the car description rings any bells, please get in touch with us as we would love to solve the puzzle of this mystery car."
The car has been added to a 140-strong collection of classic models at the attraction.