I doubt a "hub driver" will earn a 6-figure salary, but manoeuvring a semi truck two or three trailers is definitely a skilled job that many (most?) people are not capable of learning to do well.
I doubt a "hub driver" will earn a 6-figure salary, but manoeuvring a semi truck two or three trailers is definitely a skilled job that many (most?) people are not capable of learning to do well.