17. Sam Will Walk An Empty Bike
The sheer act of getting around in Death Stranding is difficult, but fortunately you unlock vehicles quite quickly. The downside to that is they run on batteries, and they don't last all that long without needing a nearby generator to recharge.
Consequently, you might find yourself in a position where you're out in the wilderness, 100kg of cargo on your back, and your bike comes to a halt. The obvious next move is to build a generator, but if you didn't pack a PCC kit all is not lost, as you can actually walk the bike, hopefully to a nearby charge point.
You're out of luck if this happens in a large vehicle, but at least you won't be completely stuck if the bike conks out.