The car electronics companies gave away the market. I was in car audio for years while in college. I sold and installed almost every brand you can stick into a dashboard - that was in the 90s.
Mobile electronics interfaces are still stuck in the 90s. The mobile industry has completely ignored the user interface advancements of the last 10 years. Take a look at the average aftermarket radio - buttons and dot-matrix LED displays that should have been replaced years ago.
Don't even get me started about bluetooth in car - absolutely no mobile manufacturer makes a stable bluetooth implementation. They all universally suck.
The best thing I put into my car was a bracket to hold my smartphone. After trying 5 different headunits, I finally gave up trying to find one that approaches the functionality and usability of my Nexus and iOS devices.
The mobile electronics companies screwed this up - apple stole nothing from them.