Meet the Arrow: a smart-kart for kids with WiFi that lets you keep your kids entertained and safe. It is compatible with iOS and Android devices. This smart go-kart has an adjustable max speed of 12 mph. It comes with collision avoidance, an emergency stop button, geo-fencing, and inactivity timer alerts.
The Arrow connects to your smartphone via WiFi. You get an alert when smart-kart is motionless. More information is available here.