Amends the Illinois Vehicle Code. Provides that no person shall gather in a public street, commercial parking lot, or any other area open to the public for the purpose of street racing or a street side show. Provides that a vehicle used in street racing or a street side show or used to interfere with the flow of traffic to facilitate street racing or a street side show is subject to forfeiture. Amends the Criminal Code of 2012. Makes corresponding changes.