TBH, the first fan you've shown is a bit limited in its use. Only one of my cars has got space to get it in, the others all have top decks, wires, bits of chassis etc in the way. This seems to be fairly standard across many current cars.
Same with the stand fan, it will work on an aluminum chassis car, but not as well as a fan blowing directly on the motor. But it is convenient, you don't have to think about it. And it can't fall off........
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