A travel sized piece of challah (a braided bread eaten by Jews on the sabbath) that is grabbed in a rush out the door. Road Challahs may be enjoyed by all, even goyim.
Carrying a Road Challah is the sign of a real mensch, having a little nosh throughout the day is a mitzvah.
Quick, grab a road challah! We've got to be on time for yuntif with the whole mishpacha!