There was an excellent report recently by the NICB here:
https://youtu.be/EE5Ygm0aFMk
I'm surprised that auto manufacturers didn't anticipate off the shelf solutions for diagnostics and law enforcement making their way into the hands of thieves.
You can imagine creative uses of a drone and one of these keyfob relay in order to get as close to as many keyfobs as possible and breaking into a whole parking lot worth of luxury cars.