I am thankful for the happy ending in the story above, but many small children and pets are at the mercy of those who supposedly are all wise and all powerful. And many deaths occur each year unintentionally.
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Short of writing legislation to teach common sense or always count your children when leaving the auto...
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Someone should suggest to the Toyota Prius engineers or other forward thinking automotive research group they put a heartbeat activated alarm that is triggered when the engine is off -- requiring an adult make a conscious decision to override or disable the alarm...