When Kouichi Matsumoto and his team set out to build the perfect fastback roof, they knew it wouldn't be easy. Making a complex mechanism perform quietly and elegantly was no simple task. Yet, they were determined to make it work. It took dozens of engineers countless hours to discover the perfect line. One glorious day, an engineer suggested moving part of the mechanism inside by a mere 70 millimeters and eureka! It made all the difference.