Google Releases Local PlusBox AdWords Feature
When users see the Local PlusBox and click on it the ad expands to include a map, address, driving instructions, and phone number, in addition to the location name that appears beneath the last line of ad."
They’ll soon make it available at many places.
"We are in the process of rolling out this feature to AdWords accounts in the US, Canada, UK, and Germany. It should be available to all advertisers with top placement ads in these countries within the coming week or so."