A Tesla Semi truck had a serious accident in California, crashing into trees and catching fire, which closed down a highway for almost a whole day.
The firefighters had to use a lot of water to cool down the truck's special batteries because they get really hot when they're on fire.
The driver was taken to the hospital, and police are trying to figure out what caused the crash, maybe the driver fell asleep at the wheel.
This crash is making people think about the safety of these big electric trucks, especially because their batteries can be dangerous if they catch fire.
