I was just watching this old episode of Mythbusters, having not seen it originally.....due to problems getting it to record around conflicting shows....
which is pretty unusual for a person that has 7 ReplayTVs 
I'm really getting into watching them again, largely perhaps because of Kari Byron....after all I guess I have this thing about red heads

Anyways...I though the cell phone versus drunk test was interesting....because it reminded me of a bar argument I remember being around back in the early 90's when the goverment was trying to make 0.08 the legal standard for the whole country....rather than where lots of places which had higher limits (and I seem to recall one place had 0.05).....
It was interesting in Mythbusters, because they used a 0.08 legal limit...and they had Adam and Kari be legal(ly drunk). And, they both failed. Which means they've not only proven that talking on your cellphone while driving is just as bad as driving while impaired....
But, they proved that the 0.08 legal limit is too high (and perhaps equally arbitrary to any other legal limit). And, that the legal limit needs to be lowered....
Since lately them seem to enjoy drinking on the show so much....maybe in a future episode (when's the episode where Kari, and company, need to be 12th stepped?), they could experiment to see how drunk they can get and still pass the test. And, use that evidence as the new basis for a legal limit for everybody else to use.
Of course, what do I know....I did all my drinking before I got a driver's license....but had no problems getting into accidents and nearly getting myself killed while driving 100% sober. Now I get to live life where I neither drink nor drive....
....where sometimes the way I walk, I might as well be drunk.... 