Okay. To use an example, this is a kilogram of silicon, and that's the main thing used to make solar cells. One kilogram of silicon, over its useful life, will produce about 10,000 kilowatt hours or about 5,000 litres of gasoline in an electric car. There are 5,000 litres of gasoline right there. The innovation is driving this very, very quickly.
I want to touch on your cost situation. When we opened up in Germany and started producing solar cells, we were selling them for about $12. Now they sell for $1. It kind of hurt our business model because we didn't build a big enough factory, but the costs have come down dramatically in the last five years.