You can now share your real-time location from Google Maps on Android and iOS5
Whenever you are asked where you are or when exactly you'll arrive at your destination, you will be able to reply by sharing your real-time location. The people you're sharing the information with will be able to see your location on Android, iPhone, mobile web, and even desktop.
You can see that you're location has been shared with others in Google Maps thanks to the icon above the compass. Naturally, you can turn off real-time location sharing anytime you want.
Moreover, you can directly go ahead and share your next trip by tapping the “More” button on the bottom on the navigation screen. This way, the people you're sharing the information with will know when to expect you and will be able to follow your entire journey.
It's worth noting that the new real-time location share feature might not be available right away to all Google Maps users on Android and iOS since this seems to be a staged rollout.