Guys if you like your machines get a GPS tracker. I got 2x installed -
1st GPS tracker is mobile phone SIM based that reports location for me on map anywhere in the world.
The 1st GPS also sends me SMS warnings if the car loses connection with GPS, if the car moves out of range of house at night, if the car moves with ignition off, if the car is started, if the car's GPS re-connects after battery being pulled, etc. All kinds of warnings are set and customizable. Then download a SMS alarm app on phone and monitor for incoming GPS SMS and start screaming at night full blast on phone if things go wrong, making sure one doesn't sleep through it. Then guns, have guns at home. No one takes M5 or your woman without serious resistance.
2nd GPS is a low frequency pinger (that I don't know where it's located, hidden even from me) and due to low frequency can send signal through basement walls or containers. It doesn't need the battery to run. My friend has this one also (in Europe) and he got his X5 Hammann stolen and they located it in another country couple days later (it took him couple days to notice it was missing). He also had forgotten to pay for insurance, so it wasn't covered. For this one, if the company can't locate it with the signal immediately, the company will send a scout plane up in the air that can pick up the signal and usually it's picked up pretty quick- like my friend's case of another country.
He just installed a 100,000 volt "electric chair" in his driver's seat if the car is started without the right sequence of buttons. Yes, he's crazy. I asked him "what if things go wrong or malfunction?" .. "Then the thief dies". LOL