Actually, I think CarPlay is a pretty important feature and I wouldn't buy a car without it, wireless or not. Turns out that wireless CarPlay is a significant step up in convenience over wired and, for me at least, is a must. I decided between the contenders in my last vehicle purchase based on wireless CarPlay availability. As with the original roll-out of wired CarPlay, I expect there to be issues and problems which will gradually be worked out with s/ware releases. As for adding wireless CarPlay after market I wouldn't count on getting that working properly any time soon. The integration with the vehicle software and hardware is just too deep for that to be easily done.