Spider silk is one of the strongest natural fibers in nature. Clog it up with some dead bugs and the spider itself it makes a nice little cork to stop up a vent.
Of course rather than allow Mazda to just fix the problem with a filter of some sort Congress will call endless hearings and Holder will shake them down for a couple billion dollars.
Careful, the global warming crowd will get the spiders on the endangered species list and then use that to shut down the evil auto industry.
Spider silk is just amazing stuff. Compared to a steel wire of the same thickness, spider web has a heavier breaking strength, is more flexible and lighter.