Winston Howard worked six days a week and clocked up more than half a million miles in Wales' first mobile shop.
His one-man grocery store is on display at the National Waterfront Museum, Swansea, until October 18.
The shop was first used in the 1920s and was on the roads of South Wales for 40 years before closing its doors one last time in 1969.
The engine and the chassis are made by Chevrolet and the cab, body and fittings were built by specialist coachbuilders William Lewis of Cardiff.
Howard's Travelling Stores rarely broke down and it is still in working condition today.