Got some time on your hands with kids, build a wifi, RPI car

OK this maybe a 1/2 day project, the author has 12 chapters on how to build his remote controlled car (Raspberry Pi being used as the controller) with WiFi out of cardboard.  Maybe this could be a teenage build too.

http://www.raspberry-pi-car.com/top-story-en/raspberry-pi-wifi-radio-controlled-rc-vehicle-introduction/6904?lang=en