[Tijeras_Slim]

Somebody throwing a chewing gum wrapper out the window could cause traffic problems on the beltway.

[tcrlaf]

“Somebody throwing a chewing gum wrapper out the window could cause traffic problems on the beltway.”

They don’t need “thousands” to make an impact. as few as 15-20 trucks, acting in concert, could shut down the highways of almost any major city.