I noticed that very many car models (most!) displayed in Tatra Technical Museum were prototypes never put into production. It was understable at the beginning of motorisation, say before WWII. But why did they spend a lot of money and effort for so many car prototypes which were never produced in poor after WWII Cz\echoslovakia?
Just my opinion: many of these prototypes were built from the beginning not to put them (after some researches and improvements) into production but... to show (at least to Czechoslovak publicity) the never ending power of communist authorities, country and its economy, science, engineers etc. Look: they stopped such "propaganda" since the market economy came there in 1990.
Excuse me, it's more Czech than Koprivnice local custom tip - I will transfer it to my new Czech page, soon!
They used to put Czech's (or Czechoslovak before) Republic coat of arm on front of train motor coaches. Look at Slovak famous express motor coach (train engine) called M290.001a "Slovenska Strela" which meant Slovak Arrow which was built in 1936 and standed in front of the Tatra Technical Museum.
It's strange that there was always a lion in Czech or Czechoslovak coat of arms. Poland has white eagle, Germany black eagle and eagles live in both countries. Did lions ever live in Czech earth ? :-)
Btw I could see the biggest ever coat of arms on each train's wagon/coache in former Soviet Union. In Poland, there was (and still is) logo of railway company (PKP) instead.