We talked about this. Its not happening.
I'm betting Walt kills Gus in the season finale, I think this is why Mike was taken out of commission as he won't be there to prevent it. The lackeys Gus has hanging around right now aren't up to the task of protecting Gus.
Then next season he takes over the meth distribution business and starts selling it out of the car wash. The series finale is a Texas-Chainsaw-Steel-Cage-Royal-Rumble between Walt, Jesse and Hank in which the entire town is destroyed when the meth lab blows up.
I have nothing to base this on other than my own suspicions, and what I think would make a great show.
We talked about this. Its not happening.