Trivia: According to director George Miller, 90% of the special effects in the movie were practical. CGI was required only for certain elements, such as Furiosa's arm, removing stunt rigs and enhancing the sky.
Trivia: The interceptor being rolled at the start was driven by the same stuntman that did the famous bike crash in Mad Max 2 where the rider is catapulted over the crashed car - the interceptor roll was a nod to that stunt. He also rolled the War Rig at the end. Mad Max 2 was the first film he worked on, and Fury Road was his last - he retired afterwards.
Trivia: Actress Riley Keough is the eldest grandchild of Elvis and Priscilla Presley.
Trivia: Actress Riley Keough (Capable) met actor/stuntman Ben Smith-Petersen on the set of Mad Max Fury Road and they married in February 2015.
Trivia: Furiosa's false arm was made of metal for the close up scenes when she is not wearing it and several versions were made of foam rubber and soft leather for the action scenes. It's CGI when attached.
Trivia: The warclub Immortan Joe uses actually belongs to actor Hugh Keays-Byrne - it was given to him by his grandmother.
Trivia: Immortan Joe is played by actor Hugh Keays-Byrne - Toecutter from the original Mad Max.
Answer: Presumably he is killed. He is attached to the truck with bungee cords and has no protection from the force of impact in the crash, which is sufficient to break the rig into pieces. There is no way he could have survived the crash.