Warning: this is not for the arachnophobes among you.
Suzuki has had to recall 19,000 of its mid-sized cars because of spider webs in the fuel lines.
It turns out spiders are attracted to gasoline vapors. They build webs in gas tank vent lines. Those lines get blocked. Gas tanks get damaged.
And oh, by the way, THERE ARE SPIDERS IN YOUR GAS TANK.