People slowed down. People slowed down over 20%, over a three day period when they trailed this system. Even though all that was changed. Was that they could win some money by not speeding. The addition of the lottery, the addition of the game, or competition element to this activity changed people's behavior. So that's an example of behavior change. As I said many of the other ones we'll see will be behaviors. That have some social benefit. I guess this one does in terms of people not speeding. But it's a different approach taken by a government agency that as we see, drives actual results.