After touch the "ARU", you can see camera preview having 3D grid and marker, google map.
Press the menu button in G1, menu would be appear.
menu has 4 item : map, marker, about, exit.
map has 2 sub menu : map type, map appearance.
map type has 2 status : satellite, map.
map appearance has 2 status : hide, show.
marker menu can change to editable map using marker.
If user select marker menu and then touch the map in arbitrary area,
map show driving path from his position(green marker) to touch point(red marker).
At the same time, 3D Red marker and path will be appear on grid.
If user move G1 phone seeing camera,
Path and marker also move to thier position.