You properly could identify cars uniquely by the sound they make. If not now then soon.
My dog could do this 10 years ago. 2 miles away through the canyon she knew exactly who would be showing up in 10 minutes. And it's a popular canyon.
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My dog could do this 10 years ago. 2 miles away through the canyon she knew exactly who would be showing up in 10 minutes. And it's a popular canyon.