Looks like a supercharger between Billings and Rapid City will be the golden spike for the northern tier I-90 corridor. The TM supercharger map appears to show that something is "coming soon" in that stretch, but it's hard to tell exactly where. Has a location been established yet (no permits have been identified, according to supercharger.info)? Plugshare also has almost no charging opportunities in that area. Has anyone done the drive and found charging? Where? I might like to do a cross country trip in the summer. Thanks.