"No big surprise here," he said. "Both Google Glass and smartphones are dangerous to use while driving, but Glass is less dangerous because you are looking straight ahead. it is nice to get a reminder that doing anything other than driving, whether it's using Glass or a smartphone, is dangerous."
Glass is still a prototype, though it is for sale as such.
Google had been saying it would be officially released later this year but has begun talking about a 2015 release instead.
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