The area along I-84 west is known for wind - could wind turbines line the edges of the Gorge? Is the stretch between Hood River and Multnomah Falls off-limits?
One of the first things I did when I bought my car over ten years ago was to get the windows tinted—to me, having tinted windows is sort of like wearing sunglasses.
While most people think of Yellowstone or Yosemite when asked to name national parks, Washington has a couple that rivals even Old Faithful's stomping grounds.