I always get a kick out of these unmanned traffic jams. There are scripted vehicles (without any passengers) that have been directed to travel on roads within the virtual world. The world itself is many servers representing squares on a grid. When you cross from one server to the next, that’s when all the problems come up. These three vehicles were unable to compensate for the problems. Well, one of them could. It soon cleaned itself up and another one came along and crossed without a problem. If you right-mouse-click the other vehicles (altering how physics affects them), they disappear.