Thanks for playing! Our navigation system is a bit quirky, we wanted to make something a bit more nuanced but with the time available we chose to do the easiest thing. Buildings might block a node in the map when placed and when trucks collide with their aoe, they have to select a new node in the map with some rule, this also comes with some quirks, sometimes trucks do some kind of back and forth loop which wasn't intended but it's fun I think!