When you (rightfully) choose for Titus to travel with Kimmy, the two head to West Virginia on her private jet, Plane-o the Sky Car. When they safely arrive, they realise there's nothing but forest and a dirt road for miles and are left with only two options: wait for an Uber driven by Mamadou, estimated at 4,000 minutes away, or walk. If you choose to wait for Mamadou — for what I assume is the shiggles — he'll reach nothing but two skeletons.
Since it's a foolish choice, the game allows you to rewind to the last choice, but if you choose to make them wait again, they're still reduced to bones. But this time around, they're discovered by an army of robots who crush their skeletons, announcing that "The last good humans are dead. We can proceed."