Square Enix is previewing the U.S. version of Final Fantasy XIII for three days in San Francisco, CA, but those eager to test out the game will have to find the FF13 "tour bus" first (via GamePro). The aim of the preview tour is to show off the game's Paradigm battle system and English voice cast, as well as to reveal a new area of the game. However, the tour bus will not remain stationary, so you'll have to check the promotion's Twitter account for updates on locations an hour beforehand