Tolik777's Instructables walkthrough provides the details, but basically you're strapping an Arduino controller with a motor driver and Bluetooth receiver to an old RC car chassis, and controlling ...

He then made some modifications to the OpenCV Android Face Detection app to send commands to the Arduino based on ‘where’ the Face is detected; if the face is in the right half of the screen ...

The build began as a simple two-motor, skid-steer RC car build with a fan for suction. Controlled by a smartphone app, a cheap Arduino board with an HC-05 Bluetooth module ran the show.

We love RC cars and the Griffin MOTO TC Rally fulfills the joy with a fun, durable remote control car that uses an iPhone or Android phone via Bluetooth.