I've driven down Interstate 40 through the entire width of Oklahoma, 4 times, lol.
One time on my way back to New Hampshire, I stopped at a fast food joint just off I40 in Oklahoma to grab some lunch. I was eating in the Teg in the parking lot. A huge old ass station wagon parks next to me on the pass. side, and a little kid in the backseat swings the door all the way open and whacks it into my rear quarter panel, he swung the door open hard too, I had my eye on them and watched it happen. I got out and looked at it, the parents just started apologizing and half-heartedly offered to pay for it, they had no insurance (no dental insurance it seemed either, lol), they looked dirt poor. It left a good size white scuff, but no dagame, and the scuff turned out to come off completely with some cheap scratch remover from Autozone when I got home, I was amazed.
But anyway, that my most vivid memory of Oklahoma, lol. Nice landscape out there, I liked driving through Okie. The most boring, crappy state I've ever driven through = Arkansas. Not only does it look too much like N.H., the # of highway construction zones was out of control.