The GM-X Stiletto concept car was an advanced, high-performance car with styling strongly influenced by aerospace design. It featured aircraft-type steering, a maintenance monitoring system with toggle switch controls, and a three-way speaker system for inside and outside communications. This concept car debuted at the 1964-1965 New York World's Fair in the GM Futurama Pavilion's Avenue of Progress mall.

source: www.gmphotostore.com