I know a few people (myself included) who claim to get impaired by marijuana. While I don't drink and drive myself, some of that crowd do, but, they never smoke

I know a few people (myself included) who claim to get impaired by marijuana. While I don't drink and drive myself, some of that crowd do, but, they never smoke and drive. Not only is there the correlation as described in the article, I've also seen (p=0) much more honest self-evaluation on marijuana.