Welcome. you are starting an emotional journey. As is the post on HMS Van Dyke another hospital ship. There is a thread in the Naval section of this Forum about HMHS Amarapoora. There are several postings.
When my father transfered from the Army desert salvage, to the RAF air sea rescue. They did not have many spares, he knew where some Napier Lion engines were buried in the desert and they went and dug them up.Using them in the boats. It could have been an area used and vacated by 40 ASP. I also remember him saying he had watched an amunition dump being blown up to deny the stocks to the enemy, He watched the shock wave travel accross the desert floor. I have got singed eybrows just watching the video about Hot Forging, working in those conditiond day after day.
No one has meantioned that lump of ordinance in the foreground. In the second picture the side window is smaller and have a quarter light I think, there is no bonnet motife, and the running boards are different. With the lack of add ons this side it may be left hand drive. What do you think?
Ford, Chevrolet, DeSoto, Plymouth and Dodge plus some others produced a similar family of vehicles. Some chassis were supplied to Australia and bodied by Holden. Because this appears to have externally mounted head lights I am going to go with Chevrolet.
I agree with you. Right hand side of the photograph is very blured in the area of the slat sided vehicle. It could also be a Fordson tractor pulling the trailer.
Does that say Ambulance of top of the cab on the 2nd from right. I will say for starters, R to Left. Albion, Fordson, Dodge, Chev, and Clark tractor, with a fuel tank on the trailer.