This is WAY off topic, but it's so funny we thought it would be a great way to brighten your day. The video above is from someone playing Grand Theft Auto 5, and it shows off the silliness that can ensue from the game's AI snowballing out of control.
In the video, the player has a motorcycle crash on the highway which results in some other cars crashing into each other, and then more cares pile on, and more, and more. After several minutes of vehicular chaos with various civilians being burned alive or run over as they attempt to flee their vehicles, an ambulance and fire-truck arrive on the scene... but they are catapulted into the cascading madness as well.
In fact, three sets of ambulances and firetrucks eventually arrive, while the whole scene plays out like an apocalyptic bumper car dance of death. The whole pileup lasts for 5 hilarious minutes, and the cries of anguish sound like a herd/flock of bleating sheep. Obviously, something like this would not be funny in real life, but the ridiculously stupid nature of the AI drivers in these vehicles is what makes this game scene so surprisingly funny. It's like some crazy new movie mashup of Death Race 2000 and Idiocracy.
It is probably partially staged with a few mods to the game, but the result is worth the laugh regardless.