At the moment you can choose from a stylish red sedan, green pickup truck or a yellow SUV.
To get started, all you need to do is start navigating by searching for a destination. In navigation mode, tap on the blue navigation arrow and select the vehicle of your choice.
That’s it. A brand new car, just like that.
This feature is currently available on iOS only. Let’s hope Google ports it over to Android soon.
Source: Google