A Boing Boing reader says: "A SUV is getting blocked by two cars on purpose and almost gets hit by oncoming traffic so the SUV driver decides to take revenge on those two cars.
Harmless fun with 5,000 pounds of fast-moving metal
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects