“What’s “a sideshow” ?”
A side show is when dozens of cars meet at a city intersection and do spin-outs, drag-races, etc. Usually with a car full of teens in and hanging on to the vehicles. I’ve seen videos of them flipping over, teens riding on top falling off, etc. It is a deadly game for them.
Ill add sideshows sometimes lead to shootings. Impounding these cars is a means to processes the owners. Im sure some of them have outstanding warrants, back tickets, out of date or stolen license plates, failure to appear, illegal for street use equipment. It gets these thugs off the street.