Wireless CarPlay didn't show up until several years after the original USB-based CarPlay, which is still around and there may still be new vehicles on the marke

Wireless CarPlay didn't show up until several years after the original USB-based CarPlay, which is still around and there may still be new vehicles on the market which only support the USB-based CarPlay. Wireless CarPlay starts with a Bluetooth connection which is then used to negotiate the higher-bandwidth WiFi link. Neither CarPlay nor Android Auto can operate on Bluetooth alone, because the video data that needs to be streamed far exceeds what Bluetooth can handle.