Burning of flammable materials due to high temperature.
Some people will use some spherical decorations made of glass in the car, which is very beautiful, but this glass product will condense light when it is irradiated by sunlight. Similar to the principle of convex lens, high temperature will be generated at the focal point of the condensed light. , if there is a combustible material, it will be ignited, which will cause the car to spontaneously ignite. There are also flammable substances such as lighters, perfumes, and air fresheners placed in the car. They will volatilize under the action of high temperature in the car. If they reach a certain concentration, they will burn or explode when they encounter sparks.