Why make more then ya would need? To do it again?
Someone pointed out on one of the NYC threads a detail that many of us missed: there was an atlas lying on the front seat of Hinrichs' car. This means either that he planned to go someplace with which he was unfamiliar, or that he had been someplace with which he wasn't very familiar. On the whole, it sounds as if the car had been packed and ready to go, but his - er, accident - put an end to that project.