You can’t see from the video but I suspect the police car had tuned off it’s lights which caused the driverless car to proceed as normal, but then it pulled ove

You can’t see from the video but I suspect the police car had tuned off it’s lights which caused the driverless car to proceed as normal, but then it pulled over again when the police car tuned them back on again. You’d expect a driverless car to pull over to let emergency vehicles pass, not to actually be stopped by them.