I rode a motorcycle west to east on the Going to the Sun road on a Saturday, stayed in East Glacier Saturday night and rode east to west on Sunday. Easily one of the best trips I've even been on. Shot 10 rolls of 36 exposure film that weekend and could have done another 5 rolls. Great scenery, and the nice thing about being on a motorcycle was that I could stop just about anywhere to take a photo, rather than being limited to lay-bys. You could get the same photos by driving a car, but you'd do a lot of walking to get the same shots.
The camera was a Rollei 35S, barely larger than a pack of cigarettes, but with superb Zeiss optics.
I really was awestruck by the "hanging valleys". I remembered reading them described by Zane Grey.