I have seen exactly the same effect. My girlfriend and I were chatting with a friend on the porch when we witnessed a car piling into parked cars by a driver who was suffering a heart attack.
I pulled up my cell phone and dialed 911. Two nurses who coincidentally happened to be taking their baby for a stroll came to the scene and peered into the driver's side window for well over a minute before my girlfriend asked them to open the door. In the end, those two nurses ended up saving the man's life with CPR until emergency workers arrived from the fire station a couple blocks away.
I pulled up my cell phone and dialed 911. Two nurses who coincidentally happened to be taking their baby for a stroll came to the scene and peered into the driver's side window for well over a minute before my girlfriend asked them to open the door. In the end, those two nurses ended up saving the man's life with CPR until emergency workers arrived from the fire station a couple blocks away.