A perfect port of your iPhone's screen wouldn't work, since its dimensions don't match those of most in-dash screens, so what you'll see, according to the demos shown by Apple on stage, is something like an auto-optimized version of the iPhone's new operating system, iOS 7.
Apple says that 95 percent of vehicles sold today are already able to work directly with iOS devices for music and playback control, but iOS in the Car will expand that functionality to also include phone calls, maps/directions, and sending and receiving iMessages using your vehicle's screen or eyes- and hands-free using Siri. It's basically Apple making a move to replace the built-in hardware and software that came with your car, and makes us wonder how automakers will react to all those iPhone users circumventing the OEM's own full-featured infotainment and navigation systems in favor of mirroring Apple's.
We'll find out soon enough, as Apple already has a pretty big list of automakers on board to integrate iOS into their cars by 2014. The list includes Honda, Mercedes-Benz, Nissan, Ferrari, Chevy, Infiniti, Kia, Hyundai, Volvo, Acura, Opel and Jaguar. To see what iOS in the Car looks like in action, scroll below to watch a clip from today's WWDC keynote.
