We have tried that route twice. Last time it took us 3 hrs 35 mins to go 113 miles. The intersection on US380 at Prosper is where they most need a traffic circle.
The traffic circles in Washington DC are a hoot! Got honked at, cussed at a few times, but then they are multiple lanes with staggered traffic lights, one of which I ran because I thought the green light was mine...wrong. Albany, New York has a bunch of traffic circles, with right-of-way backwards to what I am used to. Here you yield to enter the circle have the ROW to exit. There it's just the opposite. Took me all of....hmmm....once to get used to it.