A GPS tracking system may help with the recovery. If you notice the car gone you can track it yourself and call law inforcement. If you're on vacation and are not able to se the car you can set up a electronic fence. If the car is moved out of the fenced area you can be notified via cell phone.
https://buy.garmin.com/shop/shop.do?pID=67686&ra=true
I guess this is similar to Lojack but the Garmin is more of a DIY system.
Dewalt also sells something similar.
My car will have one of these devices including a bunch of other disabling features that I've built in.
Arthur