Honda Accord for now. While I can't go off-roading, I make up for that with 34mpg on the highway.

If it gets to the point where an improved dirt road and a 2WD vehicle can't get me somewhere secluded on public land, I'd be ditching the car at a trailhead anyway and shouldering the backpack. (If TSHTF scenario).

Ideal BoB vehicle would be a large 4WD SUV. And a gas tanker to follow me.

I've also been thinking about purchasing a few rural acres within range of 1/2 of my gas tank (~250 miles). This would serve as my own vacation spot first, and as a bug-out location second.

Lastly, there's always the bike in the garage if I want to bug-in locally and not waste gas.