I've said it once, I'll say it again. If you are traveling the North Cascades Highway, a supercharger in Winthrop makes sense. Trust me, you will suck a lot of battery making the pull from the Burlington or Arlington supercharger over the two passes. Winthrop is where you will stop to shop or eat - or Mazama, which is 15 miles sooner. If you are moving on, you fill up and go. If you are staying you can top up for the driving and hiking and biking and river floating adventures here. Next stop for fast charge on the Cascade Loop is Leavenworth. Many thousands of people hit this town in the sunny seasons and I'd love to see many hundreds of those be driving EVs. Just saying.