Well my son surprised me, and probably Well Seasoned Fool, too.
Rather than take either the "approved" detour, or WSF's more Southerly path, he just stayed on CO-13 North until it turned into WY-789, and he'll pick up I-80 East about 25 miles West of Rawlins, WY. From there it's a straight shot to Cheyenne, and then I-25 South to here.
Good naviguessing, kid! We didn't think of that.....and we live here!