Better Fuel Economy

It's not always practical advice, because many times you cannot stop your engine in the middle of a traffic jam. But if you'll be in a long line at the bank's drive-in window, it's worth considering. Even better: bypass the line altogether and come back another time. The same is true of congested routes that might be shorter in distance, but require more idle time. You might be better off driving a bit further than idling in the stop-and-go traffic.