In April 1933, Austrian company Austro-Daimler demonstrated their new railcar for long-distance express connections, to PKP.

[4] The railcar was leased and later purchased by PKP, further five units were ordered from Fablok who were to build them under Austrian licence but with various improvements.

Klemens Stefan Sielecki, an engineer at The First Factory of Locomotives in Poland Ltd. (usually referred to as Fablok) in Chrzanów, in 1935 became highly involved in the development of the construction of Luxtorpeda, which was a technical innovation in its time.

Due to the lack of buffers and couplings it was impossible to join the railcars together, or to attach a Luxtorpeda to ordinary rolling stock.

However, a towing rod, 1.4 m long, was carried in each railcar for emergency coupling to standard railway rolling stock.

The 147-kilometre (91 mi) distance between the two cities, a difficult route with many reverse curves of 190 m (620 ft) radius and grades of up to 2.7%, was covered, on average, in 2 hours and 45 minutes.

They were used as special "Nur für Deutsche (Only for Germans)" trains, travelling from Kraków to Zakopane and Krynica.

90084 was found in the Schwerin division of DR at the end of 1945 [11] However, due to the lack of parts and suitable maintenance workshops, 90081 could not be made to run at anywhere near its design speed and was allocated to operate local services near Trzebinia.

The common name was inspired by the unusual look of the railcar – streamlined, its low height (some 1.5 m lower than the standard rail carriage) and its high speed.