This footage was filmed and produced 10 March 2024.

The video shooter noticed an SUV on the highway emitting thick smoke from two exhaust pipes, similar to smoke from a bonfire. Soon, the smoke covered the entire sky.

This footage was filmed by Yuan Jian, in Weifang, Shandong, China, at 5:30pm, on March 10, 2024.

In the comments section, netizens are questioning the cause of the excessive smoke produced by the car. According to some, the smoke is a result of incomplete combustion caused by the mixing of oil into the fuel tank. However, others argue that burning oil produces blue smoke. The white smoke may be caused by a lack of water in the tank, which can lead to the high-temperature cylinder gasket burning and antifreeze entering the cylinder combustion. This causes the smoke to mix with hot gas and produce a large amount of water vapor.