I have some bad news for you here, the shutdown with a button feature though not explicitly such has been a part of every automobile for two decades. Have you ever seen what a competent hacker can do with a modern vehicle only standing within BT and WiFi range?
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Have not any links of?
https://www.kaspersky.com/blog/blackhat-jeep-cherokee-hack-explained/9493/
It isnβt as ominous as it sounds, but Bruce Scheiner writes extensively about how security is not high enough in most manufactures priority list.