Usually when confronted with an electronic throttle system people will tend to simply replace them with a cable throttle. This is perfectly fine if done properly, and pretty easy if the vehicle in question comes in a cable throttle flavour from the factory. A potentially dangerous situation arises when there is no "proper" cable option, and people use cheap throttles, bodged pedal assemblies and badly routed cables. The STC is an intrinsically safe means of controlling the throttle angle with all of the, perfectly safe, original equipment provided by the factory.