After four years, had my first experience with radar assisted braking. Nope, it did not save me from hitting a standing object with family in car like in the commercials. Instead, I was driving at 10 mph on a cobblestone street in NYC. This particular street is a little worse for wear and there were a couple of metal plates on the road covering a work area. Next thing I know, the car decided to brake automatically, lurching to a stop. Again, only going 10 mph so not much of a big deal. I normally just roll over these plates but I guess this one must have been sticking up some. Thankfully, I was not traveling faster or the unexpected stop could have been harsher.
After this, I drive around the metal plates whenever possible.