But the researchers said they believed hacking should be fun, which is why their grand finale was a syncronized light show using the Tesla's exterior lighting systems synched to music. Flashing patterns covered the vehicle, with the lights clearly operating in a way not intended by the manufacturer. The gull-wing doors even opened and bobbed up and down like rhythmic rabbit years. A member of the research team told the audience that making this light show work properly was very difficult, and required all of the vulnerabilities they had found.