The E.U. has endorsed a WiFi standard for cars, instead of 5G technology.
WiFi is used for connecting cars to cars, whereas 5G connects cars and devices.

“The text, as currently proposed by the Commission, fails to ensure a level playing field between existing technologies ... by imposing discriminatory interoperability and compatibility requirements against newer technologies,” lobbying group and 5G technology supporter 5GAA said.

[reuters.com...]