Excerpts from Chicago.cbslocal.com:

In a scene on a crowded Chicago expressway this past weekend, a motorcycle crash ended in a blaze of flames. The motorcyclists performed their stunts right on the Stevenson Expressway.

Video shows one rider popping a wheelie and touching his feet together in midair. Moments later, he loses control while trying to touch the ground. Another rider violently flipped over the crashed bike, causing a fiery pileup. Other riders stopped to help and are even seen patting the fire out on one of the injured drivers

The riders involved in the crash identified themselves in a social media post. They are both OK, and said they accept the risk that goes along with stunt rides. 

The motorcycle meetup attracted hundreds — some from out of state. They rode throughout the city all weekend, and a YouTube video shows those dangerous stunts up close.

Other video posted online from the Loop shows hundreds of motorcycles passing through — even using the sidewalk to get around.

Illinois State Police said they were called for the fiery crash, but by the time troopers arrived, the bikers were gone. State police said in a statement they know how frustrating reckless driving can be – adding that they take it very seriously and that it is one of the most cited complaints.