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according to wikipedia, laser diodes can have twice the efficiency and twice the range than standard LEDs (no mention how they came to this conclusion). If they get the spectrum right, then fine, but damnit this is not a serious efficiency issue, just "flash".
The video did say they are 100 times more dense/smaller than regular headlights (before it begins to diverge), so yah, if a kid walks up to your car, or someone in a wheelchair in a crosswalk...
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