Idiot pedestrians already "test" Waymo and Cruise vehicles by acting like they're going to run out in front of them. Put a flashing pizza sign on your Tesla and you can experience the same thing.>> We need an external light !
This remind me when drivers were putting an AAA sticker on their car bumper.
So what wass the point of doing it?
A joke was that other drivers will know that AAA will paid for their car's damages.
So drivers who needed a new fender always tried to have a collision with such AAA covered car!!!
I imagine that cars using a flashing light alerting for an Autonomous Driving car, will receive a lot of digs !!! LoL.