Directions icons available to people on our premium service only.
When you say that you want a directions icon, you get a little car symbol in the bottom left hand corner of your pin window. Click on this, and an input box comes up asking you for a starting address. When you enter this, you are immediately linked to google's directions finder showing how to get to the pin from the address you supplied. Neat, huh?
This is a new feature, and is enabled by default on all premium pins so that people don't miss out on it. If you would like to remove the icon from your pin, just edit the pin and uncheck the box.
An example of a pin with a directions icon: