Thanks to special-effects man John Stears, "Thunderball"'s pretitle teaser, the Aston Martin DB5 (introduced in "Goldfinger"), reappears armed with rear-firing water cannon, seeming noticeably weathered – just dust and dirt, raised moments earlier by Bond's landing with the Bell Rocket Belt (developed by Bell Aircraft Corporation). The rocket belt Bond uses to escape the château actually worked, and was used many times, before and after, for entertainment, most notably at Super Bowl I and at scheduled performances at the 1964–1965 New York World's Fair.