A new high-tech unmarked car is being used by Avon and Somerset Police to catch car thieves.
The fleet of cars has satellite tracking, audio and video recording and officers can remotely immobilise the engine and lock people inside.
Police say they are deploying the cars in areas where car crime is a problem in a bid to deter criminals.
So far the cars have been used in North Somerset, South Gloucestershire, Bath and Bristol.
The electronic gadgets inside the cars are movable to different types of vehicles so police can target the types of cars being stolen in any given area.
Chief Superintendent Tracy Hayler said: "The covert capture car is a proven deterrent to car crime.
"In Bath and North East Somerset where the scheme was launched it has been a resounding success and resulted in a huge drop in car crime.
"There is obviously a very strong message to those car criminals coming into North Somerset that there is a very real risk that they could end up in the wrong car, if they try to steal a vehicle."