That Jeff dude was wasted. He mentioned that he was too high to drive early in the game. I'm willing to bet if given the choice he'd rather not drive and probably wouldn't drive in that condition. On the other hand somebody "equally" inebriated on alcohol wouldn't mind driving at all. People who drink are more likely to engage in risky behavior like driving under the influence.
I've smoked down with friends many times and watched them quit smoking for some time before they had to drive because they admitted they were too high and didn't want to drive. Funny though, same guy when had too much to drink the story is totally dif. "Oh hell no, I'm not too drunk to drive" as he stumbles toward his car.....
I bet most of us could drive circles around these 3 drivers with 20 nano's in our blood though.....
I think that cop wasn't liking how well these folks could drive while being under the influence either.