(daniel jacob) for every hour that you're idling in your car, you're sending about half a gallon of gasoline up in the air. that amounts to about 10 pounds of carbon dioxide every week. (malo hutson) growth is good, but when it starts impacting our quality of air and quality of life, that's a problem. so forward-thinking cities like sacramento are investing in streets that are smarter and greener. the solution was right under our feet. asphalt. or to be more precise, intelligent asphalt. by embedding sensors into the pavement, as well as installing cameras on traffic lights, we will be able to analyze the flow of traffic. then that data runs across our network, and we use it to optimize the timing of lights, so that travel times are shorter. who knew asphalt could help save the environment? ♪