The setup they describe is so highly specific that it would also fool most human drivers.

Any car company that relies on only 1 type of sensor or only 1 sensor on a car for autonomous driving is a fool. The key terminology is “sensor fusion”, where you have multiple types of sensors to generate an accurate model of the world around the car which is vastly superior to what a human can perceive. LiDAR is only one sensor. Add in cameras and radar which many cars already have and you’ll have a car that can’t be fooled by just mirrors.

This feels like it could be exactly the type of thing that causes the car crash in the pilot episode of the Upload TV series.