Amish Carriage Sign

While driving in Pennsylvania, a family caught up to an Amish carriage.

The owner of the carriage obviously had a sense of humor, because attached to the back of the carriage was a hand-printed sign...

"Energy efficient vehicle. Runs on oats and grass. "Caution: Do not step on exhaust."

"Energy efficient vehicle. Runs on oats and grass. "Caution: Do not step on exhaust."