They are preparing to film some scenes for the new Batman movie, The Dark Knight Rises, in Oakland tomorrow, this parking lot is nearby. The Tumblers (batmobiles) are what are covered by the white covers. It is rumored that the long enclosed trailer either has the Batmobile in it or Bruce Wayne's Lamborghini Aventador!! The trailer is narrow, so my bet is for the Aventador! More footage coming tomorrow morning!
See high res pictures of the cars here! http://razzi.me/a/1726
