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Comment on Self-driving Volvos cover 200km of busy Spanish motorway

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question, since it wasn't answered in the article (I looked). do these cars tether to the truck electronically? I.e. is there a virtual leash/tow going on? Or do they use the truck as a guidepost? could they have driven without the truck? Did other cars cut in between them at any point?

Fascinating this whole move into self-driving vehicles though.

"Wirelessly streamed data from the lead vehicle tells each car when to accelerate, break and turn, all in real-world traffic conditions."

Seems like a wireless leash.

FTA

> On-board cameras, radar and laser tracking allow each vehicle to monitor the one in front. Wirelessly streamed data from the lead vehicle tells each car when to accelerate, break and turn, all in real-world traffic conditions.

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