yeah it would have to be a preconfigured kit for specific vehicles/drivetrain platorms which could be installed in a few days. Transit vans, ford/chevy p/u suv. A popular compact car platform with unreliable drivetrain issues.
I figure cost could come in below $20k depending.
All they do is combine data from bunch of different data brokers, including a few that sell hacked data. They are likely breaking multiple laws. Someone could put the same thing together that targets law enforcement and politicians. I'm sure it already exists.