Musk was not someone who would just act out, at this moment he had to gather enough information first, and he didn't know where to go for this, but still, he was able to stay calm.
"Regardless of whether I know where to get information or not, it is important to leave this cell and move around, only this way can I manage to accomplish anything. Based on my nature, it would become another huge problem if I stay in one place for long." Musk did not seem to be willing to sit in the cell any longer. The moment he does this, he might end up becoming used to this place and this would affect his other plans.
It is human nature to hate change and Musk is someone who likes to do things in a repetitive system, all this is to make his own will. Just being new in the prison cell, he can make some different decisions before he adapts.
