Agreed on this. A few weeks ago, had a car blow through a 2-way stop sign at ~40 mph. I had the right of way and no stop sign, but kept the speed down as I approached the intersection - grabbed the brakes and stared at him in disbelief as he shot through the intersection. Have seen enough distracted drivers on my commute that I just assume every car I see isn't paying full attention to their surroundings. Has saved me several other times as well...