Elliott was one of 20 to 30 members of the motorcycle group, Ruthless Ryderz, who were riding on the northbound 15 Freeway near Weirick Road just before 10 a.m., according to the California Highway Patrol. The group was causing traffic woes on the freeway as members slowed and blocked motorists so that riders “could perform illegal stunts on the freeway,” CHP Sgt. Nathan Baer said in a statement. As the group slowed traffic for their stunt show, Elliott stood up onto the seat of his 2014 Kawasaki motorcycle, the sergeant said. Elliott, who was not holding onto the handlebars, lost...