If you are heading back from downtown via I-90(Kennedy) there is a Citgo just off of Cumberland (where the ORD Marriott and Ren are located) It's the first exit (Cumberland North/Higgens) and you can see the gas station from the end of the exit ramp. Access back onto I-90 is easy as well.
http://www.chicagogasprices.com/map_...000&sid=128125
Maybe a mile from Hertz.
Last edited by ALARISstl; Jun 22, 2007 at 10:07 am