ESP8266-12 is controlled via an Android App (via wifi) and/or through voice commands via Pebble watch, ESP module controls motors and red scanner lights in a Knight Rider's KITT fashion
Source code, schematics and design in the links below:
* Instructables site http://www.instructables.com/id/S0lRider-Solar-Knight-Rider
* Blogger site http://s0lrider.blogspot.com