Postscripts

The total trip involved 8 Scouts, 5 fathers, 1430 miles driven, 5 States (MT, WY, UT, MN, KY)4+ grocery carts of food, many families and Scout supports, and literally thousands of pictures taken.

By the way, the technically correct answer to the poll was "0" miles the scouts DROVE, but 1430 miles they RODE!

Finally, here is a brief video of the area surrounding Old Faithful, and a few seconds of Faithfuls eruption. The main plume was likely 25-30 feet into the air (the rest taller), but the scale is hard to tell from the video. I was most surprised by the surrounding area, and all the other thermal pools and hot springs we saw.