For us, the decision to go to the CNG trucks was fundamental to the premise of having a closed loop system. We believe it was important to remove the organic fractions from the garbage. To motivate people to do that, we thought that the notion of adding value to what people do would then make them adopters of the system. I think an integral part of the success of our system, why so many people caught on to what we're trying to do with the organics, had to do with their understanding that we could turn around used organics to create methane, and then power the trucks that pick up the garbage. That was a value proposition that people could sink their teeth into.
To do that, we needed trucks that could run on CNG. There were some concerns at the time, so we took a pragmatic approach whereby we piloted the collection for a year, but we also piloted an actual new CNG OEM truck to also gauge the satisfaction of the performance of the vehicle, which turned out to be very satisfactory. That gave us the confidence to move on to do our entire fleet with it.