I don't know anything, but him being 67 and the witnesses said he "Veered into on coming traffic" on a public road when he was just driving the car not "testing" it. To me, it sounds like he had a Massive Heart Attack behind the wheel. I don't really see a test driver for 40+ years just losing control of the car on public roads. I think he was dead before he hit the BMW. That makes way more sense to me.