Things changed in the mid-1880’s with the gasoline engine. Within a few decades the horse was all but replaced. This caused the expansion of highway systems, spawned the oil boom, and roadside attractions and so much more!
The next major step, or at least most would agree was when Henry Ford rolled out the first truck on his assembly line. That revolutionized everything. Cars, trucks, and vehicles of all kinds were being mass produced and at prices most could afford.
This affected many industries, but the one most obvious to us was the trucking industry. Soon commercial vehicles were hauling freight from coast to coast. The trucking industry grew to become one of the largest industries in the world. As it grew and improved, so did the trucks.
Source: www.remarkablecars.com
Though most still consider the United States a young nation, the transportation and trucking industry has a long and proud history. No nation or military force could operate without the transportation of their freight and equipment.