Yep, I'm still posting about that road trip I took in August/September.
You drive right into Grand Teton National Park when exiting Yellowstone. I wish I had a week to hike and camp there. The mountains were un-be-lievable. At one point I actually exclaimed, "I can't believe these peaks!!!"
I felt like I had stepped directly into Middle Earth's Misty Mountains (super nerdy reference).