I like the Internet and I like photos so I really like the 'Commons' on Flickr.
Original Caption: Actual Demonstration by the Fire Department Training Station Showing What Would Happen after a Rear End Accident If a Five Gallon Can of Gasoline Was Carried in the Trunk of an Auto (Picture Number Six in a Series of Six.) 01/1974
U.S. National Archives’ Local Identifier: 412-DA-13031
Photographer: Falconer, David