Maybe they chose Longview to better support visits to Mt St Helens. Every time I go up to Johnston Ridge Observatory, I have to charge in Castle Rock before returning home.
Castle Rock would make more sense than Longview for St Helen visits (IMO), but either would be welcome from the perspective of visiting Mt St Helens from Portland.
I recently returned from a day trip to Johnston Ridge Observatory, leaving my hotel in the Pearl District in downtown Portland with my P90D X fully charged thanks to a destination charger. Despite driving at moderate (55-65 mph) freeway speeds on the way there, by the time I reached the Johnston Ridge parking lot, the onboard navigation was predicting I’d arrive at Centralia (currently the closest supercharger) with only 3% reserve. Since my ultimate destination for the day was Hood River and not the hotel in Portland, I opted to drive very slowly (~40 mph) down from the observatory and reached Centralia without incident, but boy did that take extra time.
For those contemplating the trip, I highly recommend a visit to Johnston Ridge Observatory. Plan to spend the day hiking around, dress for wind and varying temps, and hope you have relatively clear skies!