In the weirdest car recall in history, Mazda has had to recall 65,000 of its saloon cars in the US, Canada and Mexico after spiders were discovered nesting in their fuel pipes!
(The first incident was spotted in October 2009, when a Mazda6 was brought to a dealer with a fuel leak. A spider had spun its web in the fuel tank vent pipe, which created a vacuum in the tank, eventually cracking it. Maybe they thought they were Lotus Spyders.)
http://uk.cars.yahoo.com/04032011/36/spiders-prompt-itsy-bitsy-mazda-recall-0.html