Most shocking personal experience, occurred a couple of years ago.
On my way to work, heard sirens. Took my foot off the gas pedal, vehicle still moving. Senses in high gear (i.e hearing, visual) trying to locate direction Emergency vehicle(s) travelling. Only seconds later, a full squad of ambulance, cops and firetruck were coming in my direction. I pulled over, as far as possible, to the side of the road, so as to not impede. Not only because it is a legal requirement, but it is obviously an EMERGENCY.
The "person" behind me, passed and caused the emergency response team to veer and slow their vehicles.
People don't think........what if it was his mother, wife, child?