Here is a GPS tracker with live audio monitoring that not only lets you monitor your vehicle’s location but hear what’s happening around it. The Logistimatics Mobile-200i can report the location of your car every 30 seconds. It works with iOS and Android devices and lasts up to 3 weeks.
You can call the tracker to open up an audio channel. The monthly tracking service allows for 2 hours of live audio. More information about the Mobile-200i here.