The Petersen Automotive Museum sits on prime real estate at the intersection of Fairfax and Wilshire in Los Angeles. It's located in the car capital of the world. Still, it isn't the best auto museum. It isn't in the top five globally. But, "it could be, it should be, it can be, it will be," said Peter Mullin, who last week chaired his first Petersen board meeting, at which the museum's future began to take shape.