Arts & Crafts Magazine
When the throttle breaks, he jumps out and sits on top of the engine. With the driver leaning out of the window to see past the raised bonnet, our plucky navigator sits out front, manipulating the throttle with his hands.
found on http://www.carthrottle.com/is-this-the-worlds-most-heroic-rally-co-driver-we-sure-hope-so/