In post Supercharger - Rock Springs, WY @tniner posted a response from Tesla that mentioned 3 more Wyoming Supercharger locations they were looking at.
So, I'm creating threads for them.
from tesla today...
Thank you for your email. Our Developer Team is actively working to build Supercharger Stations across Interstate 80 in the cities of Evanston, Rock Springs, Rawlins, and Laramie. Although we are still in the early phases of deployment, we certainly understand the need to complete charging along this route. There are a number of scenarios that can affect the timeline for a new site so we cannot make guarantees about opening dates, but we are working hard to open these site as quickly as we can.
So, I'm creating threads for them.