I am also eagerly anticipating Yakima. It's useful when driving from Portland to Leavenworth (& vice versa). With Yakima, I could skip stopping in Ellensburg.
Also, last September I drove up west of Yakima area to go climbing and Yakima's Electrify America chargers were down. I just checked and Yakima's Electrify America spot currently has a plugscore of 5.2 and someone posted recently that the CHAdeMO is broke. We ended up using the Chevon north of Yakima and it was fine (gas station Taqueria was rad!?) but only because I have the adapter.