I don't want to offend. However, the old cartographers used the term "jeep" when they marked it a "jeep road." These were folks, working under some kind of federal whatever. And you and I are probably correct in that they drove vehicles with Detroit badges, they ate individually wrapped slices of cheese, and they largely built the United States that we regularly visit when wheeling today. I'm thinking USGS maps from the 80's and Forest Service maps from the 90's, also State geological and mining agencies. A jeep road is a single lane entity that requires high clearance and 4wd; t is not some dusty washboard thing that gets graded regularly.
I wouldn't broadcast to Utah that it isn't "slickrock" but, it is a really common thing called sandstone. I'm not to critique in the first place, and, no way should I speak for Utah. Apparently the early settlers started calling it, "slickrock."
When the over-employed hottie serving me espresso shots asked if it is an FJ. Come on, she if from Boulder Colorado - trap question, she probably learned to drive on one. "Yes it is an FJ." Maybe she if fluent in jeep and, it isn't a CJ, XJ, YJ, TJ? I don't know about Jeeps, other than I think that they are cool when you tone their appearance down, and they aren't for heavy wheeling out of the box if they are old. Remember we are in the States here, and I speak American, which is way different than Canadian and English that I also hear. I can not for the life of me understand Texas, California, or New Jersey vocab., and I bet they are like what am I talking about anyway?
When you capitalize Jeep, it is like, huh? Is it Willys, Ford, AMC, MD Juan, Chrysler... Could you be more specific if you use a capital letter?
FJ-40 isn't an actual exterior body badge, and it really means a certain group of engines for a Cruiser of the era. But how it is used as a legal title is different/stickier. What I usually say has always been "40," due to the dwindled and impoverished collection of Cruisers I typically find myself around. Now for those who have herds of Toyotas, the amount of syllables gets you winded at any altitude, former smoker or not.