'People's Convoy' plans to slowly loop around the beltway Sunday

[taxi]

32. 1974 - January 02 - President Nixon signs national speed limit into law

Are truckers actually forming a convoy in support of lower speed limits?
Or maybe a reduced speed limit only for trucks is what they are in support of.
With the increasing costs of fuel maybe this could be examined; being mindful of what is being asking for hasn't crossed their minds.

The act also prohibited the Department of Transportation from approving or funding any projects within states that did not comply with the new speed limit. Most states quietly adjusted their speed limits, though Western states, home to the country’s longest, straightest and most monotonous rural highways, only grudgingly complied. Even after OPEC lifted the embargo in March 1974, drivers continued to face high gas prices and attempted to conserve fuel by buying revolutionary Japanese economy cars.

https://www.history.com/this-day-in-history/nixon-signs-national-speed-limit-into-law