YSK there's a 99.99% chance that your car has a GPS Tracker and Ignition Cut Off Switch installed without you knowing. (And no, it's not your phone or navigation package)
from /r/YouShouldKnow
YSK有99.99%的機會，你的車在你不知道的情況下安裝了GPS追蹤器和點火切斷開關。(不，這不是你的手機或導航包）。)