Or not. My drive from Boston to Maine is about 180 miles. Increasing my average speed by 10 mph shortens the trip by over 30 minutes, which at my billing rate is over $400.And the reason you have to drive faster than the speed limit is?...
It's not like you will get there any faster because all that will happen is you'll get behind a slow car or have to stop at a stop light.
In addition, it's far more nerve-wracking worrying about speeding tickets or when you'll get going again.