Back of Beyond Vehicles

I've been thinking through the logistics for the Back of Beyond oil expedition. I have all of the figures I need but I also need to put together a convoy of improvised armoured cars and unarmoured trucks. I have a couple of Models of Yesteryear Mack AC Bulldog trucks, which would be ideal for the up armoured army surplus vehicles, with the addition of some plastic card plating and some stowage. 

I need to think about the unarmoured vehicles too, so may use a couple more diecast Mack trucks or some Model T's, although I'll have to have a rummage in the box of toy cars under the workbench to see what I've got already. I quite fancy having at least one oil tanker truck to fit in with the theme so I may have to search on ebay for a suitable model to use.