The fact that the test isnt accurate not what I was saying. Dont know anyting about that, but i'm sure its not.
Driving home stoned or drunk aint a smart idea, its dangerous. I'm not a saint behind the wheel, and never claimed to be one. Do i speed in school zones? Hell no, kids can dart out in an instant. Do i do 120km/hr on the highway, sure i do...
Do i drive home drunk, or under the influence of anything other drug? Hell no, because it impairs judgement, and maybe then i would do something un-saint-like and cause someone injury, well at least the chance of it happening increases...
Like anything though, you pay your money you take your chances.