"... and that earned him the name of War Thug ... erase previous word ... War Thug ... erase previous word ... WAR ... THUG ... WAR THUG! WAR THUG! WAR THUG! NOT WARTHOG YOU GODDAMNED PIECE [CENSORED]"
It was the most amusing thirty minutes of the drive.
He ended up not dictating the book on the drive.
It was only later that the thought came to me that he should have gone ahead and cleaned up the text later. I'm not sure how successful that approach would be.