An old sailing mate of mine is going through a winner-takes-all split and he's not in a good place right now.

He wants to use what money will be left to him, buy a small used camper, and go walkabout for a few years. Drive around, cook at the back of the car - that sort of stuff.

I think he's crazy. (I can do this for a week max per year)
What are the annual costs of this lifestyle ? Petrol, insurance, food, repairs, odd Internet? I figure $10-15k? The more the better, I'm trying to talk him out of his initial purchase until he chills..