I feel like these days the tech should be there to just leverage our cell phones for this. Most drivers have their phones paired to their cars now anyway, and perhaps some sort of emergency protocol could be created where a car could even connect through a nearby non-paired phone for an automated emergency call too. As for tracking - make cars have something like an air tag type function built in that can share both android+apple tracking networks. This is all a pipe dream anyway - there's money to be made on connected car services so the shareholders won't be for modernizing the approach anytime soon.