Nice, easy to look at video. When I was in Europe in 2005, and still talking about C. F. Mirbach, my guide took me to a special area or building - that was his terminology. I will find a picture of that building. Anyway, he made it quite clear that I should consider myself to be very privileged to take me inside this building - the first floor to be precise. I didn't know what to expect. Also, I was under instructions not to take photos.
Anyhow, upstairs we go. From memory, there were four cars parked randomly - two RED 540Ks (as in the video), a Black 540K and a beige coloured Horch Convertible. Boy, oh boy, when you see these cars in real life, they are awesomely beautiful. Also, the size - huge. The video does not properly convey the size of these cars. Regards Styria