How many times have you encountered a road reality that didn’t match up to navigation via Google Maps? Plenty of people have wrecked after tossing out their common sense in favor of depending solely upon GPS and Google Maps. There’s quite a bit to be excited about when it comes to Google’s self-driving car project, but many people have no clue that those autonomous cars can’t drive in 99% of the U.S. Part of that is due to the fact that Google’s self-driving cars can’t be taken out in snow or in heavy rains. Another very real limitation comes into play if the self-driving car encounters something different than what the map says, such as unmapped traffic lights or stop signs.

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