California passed a hands-free law that took effect around July 1.  It's now illegal to talk on a wireless phone without a "hands-free" device.  I would theorize this makes driving much MORE dangerous.  Instead of just picking up the phone, I'm now faced with either untangling a headset or trying to get my bluetooth headset to actually connect to my iPhone.  As I fumble with this, hurtling down the road, I often wonder what the effect of this law is.  Unless you're a headset manufacturer (who no doubt lobbied hard for this law) it seems to me to be a quintessential example of un-intended consequences.