The woman, her newborn and her teenager all needed emergency medical attention. The only way to get them to a doctor was by charter plane, but it couldn't take off because the runway was dark in the dead of night.
So a local radio station put out a call for help, and within 30 minutes, some 300 cars and motorcycles showed up to light the Peruvian runway with their headlamps, according to the BBC.
As you can see here, their plan worked and the plane took off successfully. Just goes to show you what drivers (and riders) can do when they work together.
Hat tip to Marius!