It's a road rage incident near L.A. between a motorcyclist and a car. It starts when the cyclist kicks the car, and then the car swerves into the cyclist but mostly misses.
Instead, the car hits a retaining wall, loses control, and then spins back into traffic where it hits a pickup truck that rolls over! Pretty crazy. The cyclist escapes all the chaos and keeps riding away. The pickup driver suffered minor injuries and everyone else is okay.