Safety warning... water bottles left in your car, can become magnifying lenses, and possibly start a fire in your car or truck

In a test conducted by Oklahoma's Midwest City Fire Department, sunlight magnified by a water bottle reached 250 degrees, news channel KFOR reports. "The sunlight will come through, when it's filled with liquid, and act as a magnifying glass as you would with regular optics," said MCFD's David Richardson.

"It uses the liquid and the clear material to develop a focused beam and sure enough, it can actually cause a fire, a combustion," Richardson explained.



https://www.cbsnews.com/news/that-bottled-water-in-your-car-could-start-a-fire-firefighters-warn/