A truck without a driver has no value in a war. Lend lease was important but the ambition and drive to defeat Germany required huge sacrifices on all sides that are impossible without shared cultural ideals.
Those "shared cultural ideals" amounted to very little beyond "conquer the Nazis, before they conquer us" - as late-war and post-war relations between the USSR and the Western Allies showed. Or, as pre-'39 Western policies showed. The '30's saw the Nazis as an evil...but a useful and "not too" evil, that would (mostly, in effect) protect the West from the greater evil of Soviet Communism.
You’ve watched too many Hollywood movies. Yes, Lend-Lease was very helpful - but only about 5% of Soviet GDP. For example, the Soviets produced more tanks than all other allies combined, and that was while under massive active attack and invasion - even moved entire factories.
The real myth is that the Soviets just threw meat waves and would have lost without Uncle Sam. Most of that was anti communist propaganda and any serious (ie non-narrative driven) historian knows the truth about the industrial and military achievements of the Soviets in that war.
Lend lease included food and industrial equipment which was critical for Russia through the war not just tanks, aircraft, and ships. The value was more in covering what their economy struggled with than simply total output.
“In all, $31.4 billion went to the United Kingdom, $11.3 billion to the Soviet Union, $3.2 billion to France, $1.6 billion to China, and the remaining $2.6 billion to other Allies.” ~12x that when counting for inflation.
As pointed out by a sibling poster Russia produced more of them than the US but not more than US + England. But the context was tanks are relatively difficult to ship, so America focused on other areas.
"the Soviets produced more tanks than all other allies combined"
For such feats, factory equipment mattered. So did trucks. Studebakers were relatively cheap and probably wouldn't move the needle on your GDP-based meter, but they were very important to Soviet logistics.
