Day of rest. Went to church. Learned about the LDS pioneer trek through Wyoming. I finally figured out why they had to go so far north to get to Utah - there was no other way in that was better. This helps me appreciate just how much work they had to do to build I-80 and I-70. Talked to the old timers in our ward that still remember when I-15 did not exist. Now we drive those roads, and take them for granted complaining when we have to slow down to 55 in a traffic jam or when there is construction.