@CycloneErik - A bunch of the neighbor ladies just completed an overnight (Ragnar) run similar to what you did. Evidently, it is better to be in the first vehicle than the second. After the first legs, the people in the first vehicle all relaxed and slept a bit. The second one had people too excited to sleep until it was their turn. Evidently, the lack of sleep caused some weird driving errors later on (driving down a one way street the wrong way...). However, that could have been caused by the fact that it was all women drivers.
Was this the wife swapping ladies you had on your trip?