With LoJack dead in the US, what is a classic car GPS tracking alternative?

We put an air tag in our son's car the only problem is IT TELLS HIM IT'S THERE WHEN HIS PHONE IS NEAR!!! He was warned NOT to mess with it OR the keys will be taken. It also is slow and not in real time (it will tell you where the car was 18 minutes ago not right this minute) We're looking for one with GPS to monitor speeding as well?