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This is an ultra-efficient interface. Also, it will work for illiterate users. Very simple idea -- Arjun calls Raj using Teleport. Teleport has in-built location recognizer that recognizes location names in realtime and displays a 3-D view of the locations. No user input required -- the service runs in the background.

Safety Issue: Some locations might not be interesting. User doesn't have control over which locations to see, which not. Also, if the location is incorrectly identified, there is no way to correct it.

This tries to address the safety issue, by compromising a little bit of efficiency.

Instead of directly opening the location, it generates a transcript of the call in realtime and highlights all the recognized locations. Hovering over the highlighted locations open the location in the 3D location window.

It's safe as user can correct the location (if system recognizes it incorrectly) and thus would show only correct locations. Also, user has the control over which locations to see and which not to see. 

Text This is a different kind if interface that gives users more control. It is a direct manipulation interface that les user explore any location they want. It also allows simulate walking or driving. It allows changing speed, pause, and resume. It stretches to ultra-safe as user can asynchronously explore a location.