THE CASE FOR DIESEL ( Repost in response to SD comment)

[Highlander]

If I had the fuel in that situation, then I would mainly use it to do reconnaissance, certainly in this area where communication would be at their worst, it would really be the only way of finding out what is going on LOCALLY

... but also for a generator if possible, so the fuel consumption of a car might not be a good idea,..personally I would use a quad bike where I could get three times the mileage of a car.

.... but I doubt fuel would last long, even if you were equipped with pumps and abandoned cars