It occurs to me that #KConnect/#Valent/#GConnect could be the basis for a really nice self-built counterpart to #CarPlay and its ilk. USB-C -> #RaspberryPi in gadget mode pretending to be an ethernet adaptor (local networking) and an audio connector (relay to car soundsystem). (i) Buttons on the steering wheel control audio and some number of macros on the phone. (ii) #Rhasspy on the pi gives you more macros, or e.g. "Call X" , "Navigate Home". Plus, #KConnect has Android and iOS clients!