Google maps the Grand Canyon

Google Maps have released over 75 miles of panoramic trails inside & around the Grand Canyon, Arizona. [youtube http://www.youtube.com/watch?v=mpcar4L_EXY&w=560&h=315]

This is all part of their extraordinary 'World Wonders' Project, where you can have your mind blown all over the world.

How do you feel about Google's quest to map the planet?