Every year, teams scour for junk that they can use to build their box car. They have two build days before the race. Finally, the boxcars race down Peterson Hill either round-robin style or in heats until only the fastest (and sturdiest) car is left standing.
The event, organized by the Triton Engineering Student Council, receives the support of the UC San Diego's facilities team and of the Associated Students. This year, Sprinkles provided free cupcakes at the event. If you missed the derby, you can still see the winning car on display in the science and engineering section of Geisel Library.
Pictures of the event courtesy of Tony Wong and Sam Sun.