an SR4 works racing car from Graef & Pen, which was hidden on the roof of the factory at the beginning of WW2

In 1980 was remembered, and brought back inside - only to then spend 40 years in individual parts in the basement of another industrial building.

https://www.carpixx.ch/en/concorso-deleganza-villa-deste-noble-oldtimers-in-front-of-a-dreamlike-backdrop/