The Daily Mail: "One Mars worker said: 'The driver got on top to open the hatches on the roof. When the driver looked down he saw lots of men in brown-coloured clothes—all saturated with the powder.'"
The truck was heading to the Mars Bar factory in Slough, England, where its cargo would have gone into Mars Bars, Twix, Snickers, and M&Ms. It's a fantastical and bewildering story, but it could have had a deadly ending. The cocoa powder in the truck is very fine, and the stowaways ran the risk of suffocating in the chocolate-rich air. [via @alisoncook]