ABC/Heidi GutmanPaul McCartney will launch a new leg of his Got Back tour in Australia in October, which means a lot of traveling for the two-time Rock & Roll Hall of Famer. And he has some specific ways he likes to pass the time. In a new Q&A posted to his website, McCartney was asked how he keeps himself busy while traveling on a plane, with the fan wondering if he has hobbies like “reading, watching TV, or knitting…?” McCartney says he’s not a knitter, although he notes, “I imagine that would be quite cool, actually ... it must be a great release of tension.” “But I ...