Take my advice and bring along a video camera. I recorded it once when DH was driving and the resulting movie was so shaky half from his terrible driving and half from m laughing my head off as I kept up the insults and back seat driving suggestions. A guy and his kid were in the car ahead of us and it wasn't moving and they were waiting for someone to come and help. DH kept giving him suggestions and advice like it was a real car, offering to change his tire, give him a push, call AAA, and suggesting he check his fluid levels, until someone came and got it moving again. By the end of the ride, tears were streaming down my face I laughed so much. The CMs must have thought we were insane. The next year it was my turn again and I wasn't paying attention when DH directed me to the other side where we got a right hand drive car as payback and then proceeded to give me the wrong steering instructions in an effort to make my driving worse.