Everyone on the panel agreed that it will be critical for people to be assured that hackers can't easily take over their car and force it to speed down a roadway or crash into a tree.
There's no one way to build a safe system, but developers need to keep cyber-security paramount when working on autonomous cars.
"We have actually tapped into automated vehicle systems," said Chris Gerdes, director of the Center for Automotive Research at Stanford University. "A lot of the hacks have come through the entertainment systems. It's not always great when everything can talk to each other. You see a growing awareness of this in the auto industry but this is clearly something that needs to be addressed with the best standards of cyber security you see in the software industry."
Medford said that's a huge focus for the team at Google.
"We take it seriously -- and dealing with cyber attacks is something we deal with every day," he added. "We're doing some challenging testing on it... Every day something new comes up that you hadn't thought about or understood."
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