What ever you have read till now is just wrong. Here is the detailed description of what Sasuke is actually thinking.
Sasuke is going to see Arnold Schwarzenegger. The question is why?? The answer is simple. He wants to re-populate the world with the Uchiha again.
The story begins few years back when he, Oro and Kabuto watched a movie called Junior(1994). In this movie Arnold gets pregnant and has a child. And then, since Sasuke is too smart for his own good, he thought- "Hmm... since no more female Uchiha are left, then i'll just have to make more of them by adopting this idea. Only then can there be a 100% Uchiha be born". From then on, his second goal was to get knocked up( first one being the killing of Itachi).
Therefore the idiot( Sasuke) is going with Oro to "The Governator". Oro, btw, is accompanying him to get stronger seeming that Schwarzenegger was Mr. Olympia back in the day and obviously he wants to take over his body.