See what's new in the auto industry and check out the latest model cars. Visit the Chicago Auto Show at McCormick Place, February 12 - 22 for half price on weekdays.   You can get half price coupons for weekday tickets on cans of Pepsi, or pick up a coupon at State Farm offices, Shell stations, and participating new car dealers.  More information is available at www.chicagoautoshow.com.