Other sites (like Daring Fireball) have noticed that the blacklist is hidden in CoreLocation (an API that uses various means - including GPS - to determine the phone's physical location), so here's how I choose to interpret it...

Google should really do a driving simulator based on Google Earth, similar to the flight simulator. You could drive around any city virtually, which would be pretty useful if you wanted to learn the streets of a city you were visiting. I'm sure there are a ton of other possibilities too, which I'll refrain from spelling out in detail since I've played a few too many hours of Grand Theft Auto.