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Just at dark, the wet city turns treacherous. Puddles leer from slick streets. Huge metal bugs, lit up white in front and red in back, roll out of parking lots. They clog the streets, growl annoyance, spew exhaust. From the surrounding buildings, fragile humans scurry in waves. Hypnotized, they approach the bugs, which swallow them and move on in dense, snarling streams.
What are the "huge metal bugs"?

• 1. airplanes

• 2. fantasy beasts

• 3. cars and buses

• 4. mutant beetles

The "huge metal bugs" refer to cars and buses.