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For what it's worth, my brother in law who drives semis had not heard of that. I think it might be a tall-tale.

Modern trucks contain quite a lot of semiconductors though, so I expect they'll be affected in some way.

Do you mean U-joints? Or the major components themselves such as transmission, driveshaft, axle, differential, brake chambers, etc?

I think he means general availability of trucks and drivers. Not drivetrain components specifically.

No drivetrain components are becoming unavailable.

Yeah u joints

No.