"It all started with the idea of recording in different studios all over the country," says Grohl. "Doing something to make it new. You can tie all of these people and places together with these 'sonic highways'. This is a musical map of America." The Foo's HBO special "Sonic Highway" debuts in a couple months, 8 episodes highlighting all the cities and legends they recorded with....in the meantime, the above Trailer is all we have:( -Frank