What distinguishes trucking as the most flexible mode of transportation in the U$.$S$.?$

What distinguishes trucking as the most flexible mode of transportation in the U$.$S$.?$

Its extensive reach, accounting for a significant portion of total freight volume.

Its ability to transport goods across international borders without regulatory checks.

The restriction to short$-$haul deliveries under $200$ miles, ensuring timely door$-$to$-$door service.

The exclusive reliance on roads for transporting high$-$value consumer goods.