Hmm. That's fishy. http://espn.go.com/nfl/story/_/id/16805027/denard-robinson-jacksonville-jaguars-found-asleep-sinking-car
I wouldn't automatically think he was on something because he fell asleep at thr wheel. I would automatically think he is one damn lucky man. If you run off the road asleep, you are very likely to severely injure yourself and potentially die.