Been thinking a lot on this recently. I have plenty of spare parts and stuff for my bicycles but almost nothing for my Kia Sportage daily driver... after a couple camping trips where I'm sure I added a few new dents to the floorboard/frame, I realize I could have been very much worse off. What would be a recommended system be if one has the space? I see that many serious 4x4/off-roaders carries a whole bunch of tools, rope, straps, cables, extra drive joints, extra axle assemblies or shafts (depending on type), portable welding and generator systems and so on... to the point that there's almost no space for people, or requiring a second support vehicle, often a pickup truck.. makes me wonder. Should there be a disaster, roads blocked, or stores all emptied, shops closed/looted, and the like... would there be enough of the infrastructure left for people to do routine maintenance? I am familiar with oil changes, gasket replacements, brake jobs, window motor replacement/repairs... but not yet familiar with motor vehicle axle shafts/differentials/hubs/wheel bearings. Its also why I am thinking if must travel around clogged roadways or similar, a bicycle with a trailer may be a good option.