Here's the response I got back from McDonalds when I asked if it's just a Chicago thing or where else. Basically, they said call the McDonalds in your area to see what they are promoting.
When I called, some in my area are running the Challenger cup, some aren't. Ask if they have a large soda cup with an old car on it with the plate # from the pic on the previous page as many don't know what a Challenger is.
Maybe you could say, "You know, tha car from the Dukes of Hazzard." and they'll say, "Oh yeah, that's on our cup!"
"Hello Philip:
Thank you for taking the time to contact McDonald's. We appreciate this opportunity to respond to your inquiry.
McDonald's has national and many local promotions running across the country at any given time. Unfortunately, we are not able to maintain details on all local promotions, including the one you are referring to in your e-mail. I would encourage you to contact the management of your local McDonald's restaurant to determine the dates and other details of this promotion. Because 85% of McDonald's restaurants are independently owned and operated, prices and participation may vary.
Again, thank you for contacting McDonald's. We hope to have the opportunity of serving you again soon under the Golden Arches.
Tim
McDonald's Customer Response Center"