Most semi-trucks in the U.S. still have unsynchronized transmissions, even though they're harder to use. But why is this old-school tech still popular?

While semi trucks and their trailers are obviously massive and heavy, it may not be apparent to everyone just how much more bulk these road goliaths possess when compared to other vehicles. Per U.S.

Cab-over-engine trucks are a rare sight in the U.S. these days, though they are still popular in Australia and Europe. Why ...