[based on this lemmy thread]
Building a rig for weekend camping is fun. Building a rig for weekend camping that can do more is fun and can be highly valuable. Consider the following scenarios:
The rig needs to be prepared before the emergency. The water container doesn't necessarily have to be filled and carried around 24/7, but it does have to be available.
The vehicle needs to be in serviceable condition with sufficient fuel in the tank.
Reminder: practice with all gear beforehand and rotate perishable stocks.