Based on the search results, "What the Car" or "What car is it?" are the names of some mobile games or apps available for download on Android and iOS platforms. These games are related to cars and involve guessing the car shown in a picture or participating in a racing adventure full of surprises. APK is the file format used for Android apps. It is similar to the .exe file format used on Windows computers. When you download an app from the Google Play Store, it is automatically downloaded in the APK format. Similarly, when you download an app from a third-party website, you need to download the APK file and install it manually on your Android device.