Man I cannot believe they actually wrote a blood test for THC into the law. How is that even going to work? It's not. I would guess that 90 percent of the people with a negative opinion about driving while high have never done it. I'm not particularly an advocate of it, but on the list of things you can do that make your driving more dangerous, "smoking a bowl" is a hundred places below "play with your gps," or "dig around in the backseat for something." Period.
You make driving while high sound like a good idea. From what I've read it seems two things happen: drivers become more cautious (good) and reaction times are longer (bad). But it's better than booze I suppose. Plus if I were chauffeuring people around then I'd prefer them baked rather than drunk.