It's a widely known fact that "stop-and-go" driving reduces fuel efficiency. Energy is wasted hitting the brakes on your car, and more energy is required to accelerate from a stop to resume a normal driving speed.
Yet all across the United States, there are many traffic lights that almost seem like they're timed to waste gas - you come across a cluster of lights and it's stop-go-stop-go-stop. We all waste time and fuel at these clusters.
Imagine if our traffic grids were more tuned for fuel efficiency. Less stopping would mean greater fuel efficiency. We'd all save money, we'd save time, we'd reduce our emissions and our dependence on oil.
Fuel efficient cars and driving techniques only go so far - let's make our roads more efficient too!