Pro Thieves nowadays are too clever. They will assume you have tracking devices installed and immediately drive the vehicle inside a container where any form of tracking device is effectively useless. They will then take their time to dismantle the device. Therefore, even with a tracking device, you only have that possibly ten minutes to track it and thereafter, adios.
If you really want a tracking device, you don't have to pay thru your nose, just DIY. Get an old phone, enable friend finder, or get an old iPhone or smartphone, get a supplementary line for $10 per month, activate data on required only, enable location finder. Hide phone inside the car. Charge it every few days. Accuracy is about 50-100 meters.
Honestly, my opinion is that, if your car is hijacked or stolen, not unless its recovered immediately, it'd better to just let it go and claim insurance. You don't know what's been done, or could have been involved in some nasty accidents.
The better alternative is a install a tactcham rated vehicle immobiliser, if you have been hit from behind, enable the immobiliser, if a hijack does occur, give the thief the keys and run far away, in less than a few hundred meters, the vehicle will be stopped dead on its tracks and the lights and horn will be blaring for attention. The thief will have no choice but to abandon ship to save his ass.
A good brand is auto watch from UK but such installation will involve rewiring and will definitely void warranties.
