Air Supremacy that allowed these vehicles and trains to move in broad daylight was due to General James Doolittle's other lesser known WWII feats, like shipping hundreds of "obsolete" P-40's, with inexperienced pilots, that simply outnumbered the Germans, and took control of the skies over Egypt.

This typical "American" "solution" of moving overwhelming resources to bear on the problem "at hand" of achieving a strategic objective caused the British to note, "that Americans didn't solve "problems" like these, so much as we just "overwhelmed" them".

These are what appear to be US "Grant" tanks on the flat cars (ala Humphry Bogart in Sahara), which along with Shermans, arrived by the ship load, to "rebiuld" and re-equip the British, Australian, Indian, and South African forces of the 8th Army, prior to El Alamein.

James Doolittle's major other contribution to the "Monty's" victory at El Alamein, was his ability to add hundreds of B-25 bombers to attack Rommel's supply limes. These were "flown" across the Atlantic via Brazil, (and like the Tokyo raid, well "beyond" there normal operating range) and across Africa to Egypt, which along with B-17's and B-24's (some coming around the world from CA, via Australia and India) destroyed Tobruk as a functional forward supply base, forcing Rommel to unload and move supplies from Bengazi, over 800 miles from the front. Which along with Ultra breaking the codes allowing the planes to somehow always mysteriously "find" the Axis convoys to Africa, cut off his fuel and other supplies.

The other North African rail and transport "miracle" was in the Winter and early Spring of 1943 in Morocco and Algeria, where when the US brass heard there was a shortage to transport, we simply shipped out 5,000 new trucks to the front, within less than a month of the request.

The North African French built RR's were in terrible shape under the Vichy powers. They were also cut off from European coal, and burning bad North African coal which had low btu content, and could barely move the engines themselves, much less any tonnage. So, along with hundreds of RR cars and dozens of engines to increase capacity of the Algerian RR's, the US even shipped in the higher quality US coal to run them.

Learn from history....?