That's when I break out the postal code. If your city has that much of a span, then tell Google to start at your postal code instead - the idea being that you c

That's when I break out the postal code. If your city has that much of a span, then tell Google to start at your postal code instead - the idea being that you can usually drive from one end of a postal code to the other in <5 minutes. I know there are postal codes that span long distances, but they tend not to be in cities that span long distances.