Sorry for the delayed response. Haven't had a lot of downtime lately. With you being right there in Poky, next time you're looking for a fun drive, you can stay on dirt almost the whole way from IF to West Yellowstone, MT. First part isn't shown here, but Heise Hot Springs to Green Canyon Hot Springs then your at the N end of Teton Valley. With the exception of a bridge at Fall Creek on hwy 32, you can drive the west side of the Tetons all the way to West on 2 track + a couple gravel roads. Go for a drive through the park and cut back through Grassy Lake. There's a couple days worth of driving with more than few worthy sights and plenty of places to camp along the way. Packsaddle Lake, Jackpine/Pinochle Loop, Cave and Mesa Falls, Railroad Pass, Big Springs. S. MT is pretty rad too. Been riding the MTN bike up in the Madison and Gravelly Range and have driven that road from end to end a couple times.
This is single track map but this zone is the mecca for big Backcountry rides: