I realize it's not easily possible to prove the negative, but when you're exposing the public the burden must be on the company to be transparent and rigorous. And from what I see it's difficult to even find certification documents for the lidars used in commercial self-driving vehicles, possibly because everything is proprietary and trade secret.

Thomas Midgley even organised an event for reporters where he poured pure tetraethyl lead on his hands and inhale its fumes for around a minute to show how safe it was. "I could do this every day without getting any health problems", he claimed. Once the reporters left, he needed a lay-down to recover.