They only found one?
Hidden Chinese tracking device ‘found in UK Government car’ sparks national security fears
https://inews.co.uk/news/hidden-chinese-tracking-device-government-car-national-security-2070152
A hidden Chinese tracking device was found in a UK Government car after intelligence officials stripped back vehicles in response to growing concerns over spyware,
SIM cards are commonplace in vehicles, installed by car manufacturers for connectivity purposes, or simply to feed back data on the performance of a car. Most cars will have at least a 2G connection. But intelligence officials warn they have created an increased vulnerability to eavesdropping from hostile states.
Chinese tracking device found sealed inside UK government car
Security sources have raised concerns about the role of Chinese-manufactured parts in the car industry.
In particular, they are worried about Electronic Control Units (ECU), which ensure the smooth operation of a vehicle’s engine and are predominantly sourced from China.
They are embedded with SIM cards before being sent to car manufacturers as sealed units, which are fitted without being opened due to various warranty and commercial agreements, a security source said.
BMW, Volkswagen, Volvo, and Jaguar Land Rover have all partnered with China Unicom to develop 5G connectivity within cars in recent years.