Google continues to move forward with its work to improve the Google Maps experience as everything gets pushed further and further down to the local level in search. By opening the Google Maps Lab and allowing you to slap a beta logo on it if you please (a little humor from the Googlers, huh?) there is a look at what they are cooking up for the future.
When Google wants to test new features, they call them Lab experiments, and make them opt-in. Now, following many other services, Google Maps received a Lab icon. Click the green flask at the top of Google Maps and you get a chance to enable features like the following: