Just read a study is going to be done on the effects of driving under the influence of marijuana. I'm amazed this has never been done.
Study looks at driving under influence of pot
http://www.ajc.com/ap/ap/transportation/study-looks-at-driving-under-influence-of-pot/nR6pn/
Study looks at driving under influence of pot
http://www.ajc.com/ap/ap/transportation/study-looks-at-driving-under-influence-of-pot/nR6pn/