A diamond of an old journal article!
In addition to 5,900 passenger cars and 27,000 motor cycles, the vehicles ordered are 4,500 quarter-ton scout cars from Ford, Bantam, and Willys; 69,000 half-ton pick-up and reconnaissance trucks from White; six-ton and heavier units, from Autocar, Bied-erman, Chevrolet, Corbitt, Diamond-T, Dodge, Federal, G.M.C., International-Harvester, Mack, Marmon-Herrington, Reo, Sterling, and Walters. Practically all military trucks are four-wheel drive, many are six, and others are half-track. The total does not include 37,800 trailers for 2-1/2-ton trucks, being built by Nash.
The reported monthly production was far in excess of what Germany + Japan + Italy ever had while actually being in war. The mentioned orders are in one league with total German production of soft motor vehicles during WW2.
All this even BEFORE the U.S. was even at war.
With such figures, there's no point in blaming a certain event for the U.S. entry into WW2; it can only have been a question of "when, not "if".
It's remarkable how this frenzy of procurement happened in addition to the many British orders and until 1940 also French orders - many of which were taken over by the British in summer of '40.
The U.S. had entered WW1 in part because it had to make sure its debtors were able to repay their debt accumulated during the war; back in '41 the U.S. was manoeuvring into the same quasi-trap again. The huge orders for the own military (the article is but an example) were pointing at an intent to go to war anyway, though.
Another remarkable thing; both world wars started after some powers were building up military power for a long time (such as the French army for decades prior to WW1, the German navy after about 1898, the Soviet Union after about '34, Germany since '33 and more seriously since '35). This does commonly get a lot of attention in writing. What doesn't get so much attention is that both in 1912-1914 and 1938-1939 (1940-1941 for the U.S. and Soviet Union) there was an arms racing sprint on almost another order of magnitude compared to the earlier military power growth. Long periods of much, yet sustainable military spending (such as the old War, which was at least sustainable for NATO and the East Asians) are probably less to be blamed than often done. I suggest to pay more attention to the short-term spending frenzy, for this appears to really point at the expectation of imminent war or the intent to go to war soon.
The article shows how extreme and quasi-warlike such a spending frenzy looks in practice. The country is not yet at war, but it behaves as if it was.
P.S.: Concerning the title: "I used "great war" in its antiquated meaning; war between great powers. It's what's usually meant when people talk about "conventional warfare", but I found that term to be too unspecific. It also includes incompetence competitions such as the Iran-Iraq war in which both sides competed for the most inept replay of the First World War..