1972 interior view of the Balboa Park Conference Building. It was built in 1935 for the California-Pacific Exposition, remodeled in 1949, and became the San Diego Automotive Museum in 1988, displacing clog dancers, Ping-Pong players and badminton boosters who had been using the building. The museum attracts about 100,000 visitors each year to view the collection of rare and vintage cars. Special shows cycle through every few months. While vehicles are not on display, they are stored in the museum's repair shop in National City.