Rick Bayless, Free Food Dec 10-12.

Free food cooked by Rick Bayless will be offered from the 10th-12th at Rush St., between Bellevue Pl. and Cedar St. No word on times.

From Epicurious:
Ketel One-branded trucks dispensing free chef-made food will be in New York from today (December 3) through December 5, then moving to Chicago December 10 to 12, then L.A. December 17 to 19. The New York chef is Michael Psilakis (pictured), who was also at Epicurious Entertains NYC. Rick Bayless, who has blogged for Epicurious, is the Chicago chef; and Ilan Hall is the L.A. chef. In addition to free food, Ketel One will be offering free rides home (to promote responsible drinking over the holidays).

Chicago: Rush St., between Bellevue Pl. and Cedar St.
Pork Tinga Tacos - Shredded pork, guacamole and queso fresco cheese served in a soft taco
Roasted Poblano and Potato Tacos - Roasted poblano peppers, Yukon gold potatoes and roasted tomatillo salsa served in a soft taco
Black Bean and Chorizo Tortas - Chorizo sausage, black beans, avocado and salsa served on a crusty roll
Black Bean, Caramelized Onions and Beef Tortas - Black beans, caramelized onions, shredded beef and queso fresco cheese served on a crusty roll

I just posted on Gapers Block with more info, namely the time, which is midnight to 2am on all three days (December 10-12).