The CWS T-1 was the first serially-built car manufactured in Poland. A series of different cars based on the T-1 chassis designed by Tadeusz Tański (hence T-1) of the Centralne Warsztaty Samochodowe (hence CWS), it was the only motor car that could be completely dismantled and again put together with one tool; all its screws and bolts had the same diameter.
http://en.wikipedia.org/wiki/CWS_T-1
