She was afraid to remain any longer. He might head her off; he might trap her in a dead end street. Once on the straight of way, there was—at least—no danger of that. She left the city and headed north again.
Walt arrived ten minutes before she left. He came to a stop at an all night lunch. Invisible, he slipped through walls into the kitchen. He stole food, returned to his car with it, ate it. He drove to a gas station, keeping her position sharply in mind.
"Gas," he ordered the attendant.
The attendant began filling the tank.
"All the way full," Walt said. "I want a map of the city when you finish."
The attendant brought the map. Walt unfolded it.
Julia had left the city. Walt was not going to be fooled this time. But he wanted to memorize the city just in case she did double back.
"Is there ... a larger map? Of this whole area?"
The attendant brought him a California map. He memorized that one. He picked out Julia's route. He verified it.