Driver was Doug Rose. Ran jet in the rain sans afterburner to get appearance money, spun out into single guardrail. Doug continued to run the Mamba for many years.
Walt was an icon of the early days of US LSR and Drag Racing and will be missed.
Walt's son, Craig was killed in a Water speed record attempt. I was at Detroit Dragway circa 1981 when Craig somehow survived a spectacular crash in his innovative jet car that became the standard design for the modern jet Funny Car. Very innovative family, I'll post the story sometime.
RIP Walt, Art, Craig