The Volkswagen Type 64 (a.k.a Type 64K10) racing car was built in 1938/39 for the long-distance Berlin-Rome race. Based on the Volkswagen Type 60, the Type 64 was seen as the ideal model for promoting sales of the "People's Car".
The body design was made by the Porsche Büro after wind tunnel tests for a planned V10 sports car that never came into existence, the Type 114. By 1939 Ferdinard Porsche had completed three racing coupés boasting a streamlined hand shaped aluminium body built by Reutter and powered by a modified VW flat-4 but then the Berlin-Rome Race planned for September 1939 was postponed due to the War.
Early in the War one built example was crashed by a KdF (Volkswagen) bureaucrat. The two remaining were used by the Porsche family. Eventually they only used one of them and put the other in storage. In May 1945 American troops discovered the one put in storage, cut the roof off and used it for joyriding for a few weeks until the engine gave up and it was scrapped. The last remaining Type 64 was owned by Ferry Porsche who had it restored by Pinin Farina in 1947. In 1949 it was sold to the Austrian motorcycle racer Otto Matte and with it he won the Alpine Rally in 1950. The last time he drove it in a race was at the Monterey Historic Races in Monterey, California, in 1982.
Type 64 is acknowledged by many as the original ancestor of all subsequent sports cars to follow from Porsche in the years and decades to come.
Sources: PR "75 Years of Porsche Engineering Services", wikipedia.org
Edit: Porsche afficionados would call this first Porsche ever, Porsche Type 64