OK, so the limitation may be that the car hardware improvements are lagging behind the developments in mobile devices. If Apple are already capable of doing wireless Car Play, I'm pretty sure that Google have it ready for Android whenever the cars can handle it.
Cheers
Edit> Found this: https://www.macrumors.com/roundup/ca...reless_carplay
"BMW is the first car manufacturer to implement wireless CarPlay support, and Volkswagen is also working on wireless CarPlay solutions."
Edit 2> https://www.theverge.com/2016/5/18/1...google-io-2016
"Currently, phones need to be plugged in via USB in order to use Android Auto; with this new capability, you'll be able to do everything over Wi-Fi, which is especially great for the growing number of vehicles that have standard or optional wireless charging plates built into their consoles. (You don't need to be charging the phone in order to use the feature, but having Android Auto running while servicing an always-on Wi-Fi connection will likely punish the battery otherwise.)"
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