That, or to prevent the tracker in more expensive cars from doing their job.
In mainland Europe, some high end cars need to be fitted with a GPS tracker for insurance. Thieves will try to jam GPS to those trackers until they're: A) figured out how to disable/remove it, B) fled the country.
Not just high end and insurance. In EU 100% of new cars have GPS installed. This is used for intelligent speed assist and eCall that are now mandatory.
If you place a device with a high-gain directional receiver pointed toward the fob, and a high-power transmitter pointed toward the car, wouldn’t that work?
