I have been reading a lot of this forum for a while now, and I haven't seen much discussion about How to Build anything that will keep you going when gas is $40 a gallon.
Maybe I just haven't found it yet.
I have studied many things, and this is one of them. Hydrogen production from Electrolysis.
If Gas gets too costly, most would simply say to take it from the bad guys, but that is not always possible, so you will need to know How to Make a device that will run your car or truck, without gas, ir in addition to gas.
If you people are serious about being prepared, then you should be thinking about this.
You can run a generator from the fumes of your septic tank, or a car from Hydrogen and Oxygen made from water.
There are Thousands of ways to do it, I know of a few of them.
Any New ideas or input would be an assett.