Here is a smart RC car that you can control using your smartphone or hand gestures. The Ultigesture Gesture-Controlled RC Car comes with a smart wristband with motion sensing to allow you to steer it with simple gestures. You can switch between modes easily.
The smart car is made of ABS plastics and can withstand mistreatment. The wristband has an ARM Cortex M4F (nRF52) with onboard 9-DoF IMU. More info is available here.