Any chance that seeming random squiggle is a screen refresh remnant of an actual heavy traffic warning for a roadway not currently shown? It looks like the color matches that on the actual map portion displayed, anyway--any roads similarly shaped in the area? Would have to be a loop of some sort, I'd guess. I know my own app tends to lag in drawing in the new areas, although I've never seen something "left behind" outside of the actual map portion myself.
Otherwise, perhaps it is a comment on the value of our Total Traffic app.....(wink)