In celebration of the physical release of New Super Luigi U on August 25th, Nintendo held an event in Chicago on August 12th where one of the trains had been designed with New Super Luigi U imagery on the inside and outside. In a tweet released by Nintendo of America's official twitter account, this picture was posted along with the following message:
"Here we go! Ride with me on the 'L' train - Brown Line (#424)! Let my Chicago adventure begin! #LuigiAndMe pic.twitter.com/xXsP8Y2xfc"