The Glass Slipper, constructed in 1954 by Ed and Roy Cortopassi and Doug Butler of Sacramento, Calif., is credited with being the first dragster to combine a streamlined fiberglass body, aluminum frame, and enclosed canopy. As was the case with many dragsters of the 1950s, it did double-duty on the salt flats, reaching a best of 181 mph with a flathead engine at Bonneville in 1955.