Occurred on April 19, 2019 / Golden, Colorado, USA
Info from Licensor: "A semi-truck coming down the mountains lost his brakes and instead of taking a runaway ramp, he continued downhill. Traffic was completely stopped due to an accident involving a car and school bus. The truck reached the stopped traffic and plowed through at 85mph, causing a huge explosion that took the lives of four people. In total, 24 cars and four semi-trucks were involved."
