The Japanese are known for their utilization of every little bit of space that they can find. I suppose it is extremely important considering how the population size in such a small country. This is taking space usage to an extreme. Growing most of the fresh food served in the office cafeteria in the same building that it is consumed in. Ingenious idea!
Think about it. If every company used their office space as efficiently as this company we could eliminate a huge amount of food pollution etc. Probably not a very likely solution to providing fresh local food even for city dwellers, but it is an interesting concept. Maybe we could find something in the middle… Something between growing everything onsite and trucking it in. I wonder what that would look like?