Huo 或, ‘there is’. See also hexagram 1, line 4. The regular meanings of huo are ‘perhaps’ and ‘someone’. But in old texts it is often used with the meaning of you 又/有, ‘there is, to have’. That this is plausible is seen in the Chujian text of hexagram 58, line 1 and hexagram 17, line 1: the received text has huo while the Chujian text has you 又, a common loan for you 有, ‘there is’.
Yu 輿, ‘to carry by cart’. But also ‘many people’ (眾, 多). By extension ‘a cartload':
『吾力足以舉百鈞』, 而不足以舉一羽; 『明足以察秋毫之末』, 而不見輿薪…
My strength is sufficient to lift three thousand catties, but it is not sufficient to lift one feather; my eyesight is sharp enough to examine the point of an autumn hair, but I do not see a waggon-load of firewood…
Gold is heavier than feathers; but does that saying have reference, on the one hand, to a single clasp of gold, and, on the other, to a waggon-load of feathers?
(Mengzi 孟子, tr. James Legge)
They urged people on with the Dao and De, and tamed them with ren and yi. Cartloads of corpses and bloodstained knives—these were not of their doing.
(Yuan and Qian 淵騫, tr. Jeffrey S. Bullock)
Shi 尸, ‘corpses, dead bodies’.
The army has cartloads of corpses. Inauspicious.