Never mind the speed limit alone. A great way some parts of Canada could improve peoples' fuel economy and the country's pollution output from cars is by introducing the ancient idea of "green wave." My entire area is plagued by poorly timed traffic lights that will leave people gassing and breaking endlessly before they make it through a city. Proper traffic flow equals better fuel economy, less pollution, and less wear and tear on vehicles. Europe has been doing it for ages and it works flawlessly. If only they could take a hint here every once in a while.