Hello; Is that smart doing it?, so much engines causing more pollution, I don understand whet is the point of having all them together. Tearing up the soil and destroying micro organisms just to break a record ? What happens when the rain comes ad washes all that soil away or if no rain then the sun will bake it and kill all living things that were stirred up. Congratulation to all participants! Great to watch all these beautiful machines in action! I assume this event took much effort for preparation!