QUESTION:

Can an unattended water bottle start a fire in a car?

ANSWER:

Under just the right conditions, yes.

SOURCES:

Idaho Power Facebook Live Video

Midwest Fire Department

PROCESS:

With a heat wave in store this weekend, a popular video on Facebook is picking up steam. It claims a water bottle can catch fire in a really sunny car. Is it true?

First, we went to the source. The video was posted by Idaho Power—an electric utility company in Idaho.

A battery technician was sitting in his truck when he noticed his leather seat starting to smoke.

Sunlight had beamed through a disposable water bottle scorching the cushion, which had a surface temperature of 213 Fahrenheit.

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