Hamburger Patties
On February 17, 2009, A truck driver in Salt Lake City, Utah fell asleep at the wheel, drifted into the center divider, causing the semi to strike an overhead. This split open the trailer, spilling about 40,000 pounds of hambuger patties on the highway. Patties littered the northbound lanes of I-15 and some of them hopped the divider into the southbound lanes as well.
Oddly enough just a few hours earlier, a truck spilled beer on a nearby highway. Maybe someone was planning a picnic?