'Jackass' star Ryan Dunn might have been going over 100 mph in 55-mph zone

Other fatality in fiery wreck an Iraq war veteran PHILADELPHIA - As a star of MTV's "Jackass" franchise, Ryan Dunn made a career out of cheating death, one cringe-inducing, skin-crawling stunt after another. Early Monday on a Chester County, Pa., highway, that daredevil streak caught up with him.