Since there are a few Mazda owners on this forum, I thought some of you may be interested in the fact that Mazda has finally committed to offering Carplay on new vehicles and is also proposing a solution that would allow existing vehicles with the MZD system to be retrofitted.
http://www.caradvice.com.au/532338/mazda-planning-rollout-of-apple-carplay-and-android-auto/
At this stage the cost, timing and process for retrofitting seems to be unclear but I am personally quite excited about this because I find the MZD system a bit slow and clunky compared with the user experience of an iPhone.