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Dave Zweifler's avatar

I once interviewed a new tech CEO who had just come off a very, very high profile self-driving car team. (I promised him I would never reveal the source, or the company, as this person was under a very strict NDA.) I asked them why they would leave one of the best gigs in the business for people interested in product design, self-driving vehicles, or automotive.

They explained that their team realized that, to achieve a six-sigma level of safety in self-driving vehicles (that is for every million operations or decisions made by the vehicle, only about 3.4 could result in an error or unsafe condition), the computing power of the car would double the car's power requirements.

In other words, it wasn't a problem with the software or the hardware. It was a power problem where a full half of the car's charge or gas tank would be required to run the computer driving the car, using any hardware that would be available for the foreseeable future.

When the team made that discovery, they soft abandoned the project, which is why this person left. Their former company formally announced that it was going to be discontinued a year later (about six months after I did my interview).

I remember this whenever I see a company that offers a vehicle with a "self-driving" mode. That mode probably works great the vast majority of the time -- I'm sure that there's an exponential increase in power consumption to achieve very small reductions in risk.

That said, a car that's safe 99 percent of the time can kill you or someone else pretty quickly if you spend more than a few hours on the road every year.

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Russell Adams's avatar

Couldn't ticket the car because it was owned by a corporation? Don't they know corporations are people?

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