- A rare glimpse into the world of rally sports - literally from the front seat - through the eyes of Christian Geistd rfer, co-pilot for world rally champion Walter R hl - Walter R hrl: world rally champion, ace driver, legend. The greatest successes of his career would have been impossible without another man: Christian Geistd rfer, his co-pilot. This book deals with the surprising team structures, the deep insights into the technology and the quite legal tricks of a creative rally driver - sometimes riding on the very edge of the rules. Christian Geistd rfer describes this glorious time of rally sports from the front row, up close and very detailed.