Out here, that rusted out Econoline van would be a Subaru.
Once you made it to the 4 lane road they would either;
1) Move to block you, switching lanes to whichever they predict you will want (left lane first).
2) Throw their fear, and political love of Mother Earth out the window and race you, for everything they are worth to stay ahead of you until the road narrows down to 2 lanes again where can stay ahead and show you once again how to drive 5mph under the limit.
I am not Joking.
Prius owners are content to just permanently block the passing lane, Subaru drivers......they have an agenda.