SAN FRANCISCO -- Apple Inc. sold 10 million units of the iPhone 6 and iPhone 6 Plus in their opening weekend last September and sold out of its latest gadget, the Apple Watch, before it even arrived in stores.
But a year after Apple's splashy unveiling of CarPlay, a system for controlling a phone's functions through a car's display screen, the number of cars sold with the technology can be measured in the dozens, not the millions. Apple said its rollout would begin in 2014 with Ferrari, Mercedes-Benz and Volvo, but so far, only the $198,973 Ferrari California T and the $295,000 Ferrari FF have shipped with CarPlay on board.