I drove to Four Corners Monument once from ABQ. It was a shithole. But the roadsides were so littered with bottles that you had to squint while driving because the sun reflecting off all the glass was so bright. A local told me that's pretty much all indian reservation land, and tossing empties along the road is sort of a thing. I didn't understand why there were so many bottles and not many cans -maybe people collected the aluminum for scrap? Anyway, it was strange.