> It also works with your car’s controls — knobs, buttons, or touchscreen
It'll work with the knobs/buttons in the cars that have them and integrate them with whatever functionality they have (I have an old boss who had a Porsche Cayenne with a large screen controlled entirely with side buttons and a small scroll thingy, which was super awkward as the device's interface seemed designed with a touch screen in mind), but it seems that the car industry is largely moving towards touch screens in cars, with brands like Tesla leading the movement. I wouldn't be surprised if innovations like these encourage an even faster move towards touch screens in cars- Apple sure loves its touch screens.
The second thing on the page:
Control with a word. Or a touch. Or a twist.
CarPlay features Siri voice control and is specially designed for driving scenarios. It also works with your car’s controls — knobs, buttons, or touchscreen. And the apps you want to use in the car have been reimagined, so you can use them while your eyes and hands stay where they belong.