[MOARDONGZPLZ]

Sure, I can make that claim. People driving slow, as you state, aren't good for smooth flow. Have you ever been driving at night at the speed limit and suddenly come upon someone going 15mph under? It's really dangerous.

[pessimizer]

True, but pot isn't making people do that. It's even more dangerous if people completely stop completely, or reverse, at night, on a curved stretch of highway with a 75mph speed limit, but pot isn't making people do that either.

I don't even think that pot makes people drive slowly. IMO it's a result of stoned people being afraid of giving the police any excuse to pull them over.