En Mass Transit

Traffic comes and traffic goes,
but where they all go, no one knows.
They gun their engine, shift a gear
to be anywhere but here.
North goes south and south goes north,
driving, driving back and forth.
Wearing tires out, burning gas,
changing where they are en masse.
In New York, Paris, Pittsburg, Rome,
Nobody seems to just stay home!

The Word of the Day Prompt today is traffic.,