The event was a success, to the point where the group could have easily broken a Guinness World Record. Tesla Owners Taiwan, a group of electric car enthusiasts, recently held an event dubbed "Autopilot Day." The event's purpose was twofold: one, it was meant to provide an impressive demo of Autopilot's capabilities, and two, it was meant as an informal challenge to Changan Automobile, the holder of the Guinness World Record for the "largest parade of autonomous cars." Back in January, Guinness announced that the Chinese automaker was able to set the record at a test track using 55 SUVs that were operating without driver input. For the attempt, Changan engineers made specific alterations to the vehicles' systems, including upgrades to their sensors to ensure that each SUV in the parade was properly positioned, and improvements on the cars' decision and movement control.