He will want an 800 title to give him every class, plus if he wins this year and then goes on to win 800s no one will be able to match him as he will have won every 1000 title.
800s then off to rallying - rallying is a bit like bikes in that the drivers skill is more inportant than the car, in F1 it's the car that's most important. And F1 is boring!