We have all been searching for that unknown bus route. My theory is that you will have to get a certain number of points in your navcard, insert it into the bus (Possibly under the bus. How? When the bus is about to arrive at the bus depot, laydown at the area the bus will stop at, and insert it. I thought of this as there must be a reasson why the parking spot is carved in JUST A THEORY), and the bus driver will learn the new bus route. The other bus route will possibly stay onto the road, rather than going on to the dirt road after the tunnel. Any other theories? Please post it here and lets all work this out together.
Is this the second time you have posted this? There was a topic earlier worded the same. Anyhow... I believe that there is no second bus route and there won't be. Even if treyarch do decide to add one in. I for one won't be checking it out because Tranzit is a terrible map.