I lost a rear wheel on a 4x4 subaru going up a mountain, nut came off the axle spindle, wheel rolled off into the woods, I pulled off into a deep ditch. A fella who sells tow insurance stopped and give me a ride to a parts store to buy a new nut. (I bought his tow insurence as well and we've used it about 3 times sence then) when we got back a sherff was there, he called a wrecker because he was sure I couldn't get out of the ditch, even though I told him I thought I could. By the time the wrecker got there I had the wheel back on, did a little manuver to stradle the ditch and pulled right out. I guess it arn't everybody that's had plenty of experience drivin 4x4's in and out of crazy places. That was an easy one compared to some of the "roads" I'v traveled that look more like rock piles and ledges.
another one was the dodge 4x4 truck, front wheel started wobbling about 80 mi from home, pulled off and discovered the bearing disintigrated. A retired electric lineman lived right there and he took me to town to get bearings. He sat there and watched me install them, he was surprised I did it, said very few people would know how. I was surprised by the general ignorance. so why don't more people know how to fix the commen things that we mess with. Maybe something to do with the age of specialization.
Fraid I'm the other way around, I specialize in unspecialization. the more i know about more different things the more versatile i can be.