I would pay good money for GWC Crew voiced GPS add-on.
“You have reached your destination. <seanscream>”
Or what about Audra saying … “You have reached your destination. Awww yeah!”
This reminds me of my Dad’s idea for a GPS. One that talks back to you. “You turned the wrong way, you idiot.” 
I have a friend who’s GPS sighs and says, “Recalculating,” when you go off the path it likes.
Nice!!!
I wouldn’t mind to have a Hitchhickers Guide to the Galaxy narrated by the lady that does the Audrapedia as well as my GPS.
OK, that’s frakking awesome, especially the bit after the credits on the Vader one.