Ironically my 1982 car with tape player is more compatible with the latest smartphone than my 1999 car with CD-player with no auxiliary inputs.
At least both of them have standard sized head units that can be changed. There was a period (maybe 2004-2009) where custom head units were all the rage, but they largely lacked iPod or even aux inputs, bluetooth, even mp3 support and they can't be easily updated today. Totally whacko.
Totally agree the car of the future docks your smartphone and off you go. Possibly docks two, if your passenger wants to put their music on ;D