Electronic Frontier FoundationEven anonymized “vehicle-to-everything” (V2X) data can be filtered or hacked, potentially providing a gold mine for advertisers, police or criminals. “Once that data is out there, people will find ways to use it,” EFF’s Cliff Braun told @marketplaceapm. https://www.marketplace.org/2024/08/20/dot-vehicle-to-everything-technology-cars-infrastructure-road-safety/
Adam Shostack 
@eff @marketplaceapm Worse, there's absolutely no evidence that these V2X technologies will actually reduce accidents.
It's very reasonable to think that the additional cybersecurity attack surface — combined with the likely direction of "this sensor can also demand the brakes activate" — will lead to more problems than V2X solves.