Apple PR, back in 2004:
Apple and BMW Group today announced the BMW iPod Adapter, the first seamless integration between iPod and a car audio system. The new system developed by Apple and BMW enables drivers to seamlessly use their iPod in BMW’s 3 Series, Z4 Roadster, X3 and X5 Sports Activity Vehicles and MINI Cooper by simply plugging their iPod into a cable located in the car’s glove compartment. With the iPod safely located in the glove compartment and powered by the car’s battery, drivers can now enjoy high fidelity sound through their car’s stereo system and control their iPod using the standard buttons on their BMW or MINI steering wheel.
“One of the next frontiers for a seamless digital music experience is the car,” said Steve Jobs, Apple’s CEO. “We all spend a lot of time driving, and now this elegant solution lets iPod users enjoy their entire music collection in their BMW or MINI.”
Turns out, the system is still around, and the page referenced in the PR piece is still up.
I guess this is what Apple meant when it said it had “led consumer technology integration in the car for more than a decade” in the CarPlay press release.