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Nah, they've just been really slow about testing it. It's range is actually pretty impressive, but it requires very high energy superchargers on testing routes.
Range is one thing, as is acceleration, but the issue all electric semis have is haul weight. They are all bad at actually hauling goods. They have to give up 5-10k in goods carried for each truck, at least. With a standard semi hauling 80k, that's a huge amount of lost capacity. The actual carrying capacity of the Tesla Semi is one of the data points that they won't release, which tells you its not something they want people to know.
Semis are the good use case for clean hydrogen. Batteries won't fly without radically different chemistries.
Hydrogen is a way bigger scam even than anything Musk pushes.
Frankly, the real solution is for the vast majority of long-haul freight to switch back to rail, and for the remainder to just keep using diesel, but make it out of waste cooking oil instead of squished dinosaurs.
I mean, if we're talking about real solutions - a highly effective and efficient option would be airships. Could replace mid and long distance freight trucking shipments. Could replace international freight ships too.