Automakers are hoping vehicles that are compatible with the top-selling smartphones will be easier to sell to consumers who can't fathom living without the devices.
Cars of recent vintage increasingly feature electronics designed to cater to drivers' high-tech desires, but those systems still haven't attracted a widespread following. That has led more automakers to conclude that it makes sense to work directly with technology companies such as Apple and Google to turn their cars into smartphone extensions.
CarPlay requires Apple's latest mobile software, iOS 7, and an iPhone 5, 5C or 5S.
Ferrari is previewing CarPlay on its four-wheel-drive FF model. Volvo plans to feature the iPhone system in its redesigned Volvo XC90 sports utility vehicle. Mercedes-Benz isn't disclosing which models will get CarPlay, but expects both its S-Class large sedan and C-Class midsize sedan should be compatible with the system.
A long list of other automakers, including General Motors Corp., Ford Motor Co. and Honda, also are drawing up plans for CarPlay, according to Apple.
So far, GM, Honda, Hyundai and Audi have signed up for Google's "Open Automotive Alliance" for Android.
GM and Honda declined to comment on their CarPlay plans.
Ford said it will deploy CarPlay as one of several options for making its cars work more smoothly with smartphones. The automaker already features a voice-control system called "Sync" made by Microsoft Corp. in some of its cars. Ford also offers its own touch-screen technology in its vehicles.
The different choices are designed to ensure "you don't have to make a $30,000 decision about what car you're going to buy based on your $200 smartphone," said Raj Nair, Ford's global product development chief.
