If SHTF includes an EMP attack, life as we practice it will come to a screeching halt. Any of our electrical devices will cease to operate, maybe even self destruct. Generators, refrigerators, and anything with an electric motor will be useless. Very few vehicles will be able to run, as any gas or modern diesel vehicle depends on electrical or electronics to function. It's something that you need to take a long look at, as your BOV may be based on something that won't run in an EMP affected world. Hardened electronics aren't generally available to the common man, so figure your car is down for the count. Now, if you have old school diesel powered vehicles, your main problem will be starting them, as they have an electric starter. Once started, they will run until stopped or out of fuel, as they depend on compression for ignition, not spark plugs. Some diesels use glow plugs as a start aid, so these probably won't start easily as the glow plug system is electric. You could disconnect the glow plug system and use a starting aid such as ether, gasoline, or propane. Used sparingly, you can get it to fire off quickly and continue to run on fuel. As I said before, cranking the engine will be the big issue. I have a 1966 Jeep CJ5 that I'm planning on re-powering with an Isuzu diesel engine from a P'up pickup. I also found another P'up for sale in excellent condition at a great price. I plan on converting them to air starters, which are available for larger diesel engines. I may have to build them myself, but I should be able to modify existing air motors to work. With an air compressor and tank on the vehicle and a propane injection system installed for a starting aid, I believe I can guarantee mobility for myself and family to get where I need to go. Anyone else even considering the EMP scenario? The North Korean attack on the government websites was probably feelers to see where we are vulnerable to just this sort of attack.