I pulled up behind a brightly colored old bus,
and the little tree-hugger in me just had to cuss.
That ginormous jalopy was puffing out his rear end,
sending ozone-depleting toxic crud into the air to blend.
I leaned back in my environmental friendly Smart car,
mentally giving my energy-conscious self a big gold star.
But while I was beaming proudly in my glorious Green,
fumes wafted through the vent, I think I coughed up my spleen.
(This was summited in a contest using the picture prompt above)