Essex police are warning car cruisers they will seize vehicles if people continue to attend unauthorised meet ups in the county.
It comes after a large gathering in Southend earlier this month where hundreds of drivers turned up - one BMW was seized.
Police say they faced ‘aggressive behaviour’ with things being thrown at them when trying to disperse vehicles.
The force says extra officers will be out in the evenings and weekends, when meetups are most likely to happen, to ensure roads are not being used as race tracks.
Essex has seen a number of unofficial meetups in recent months. In April more than 20 people were fined for attending a 450 car meet in Chelmsford.
While a group of car enthusiasts in Basildon were punished after holding a meet opposite a police station.