Engine Run Indicator

"The Toyota Prius, as we all know, has two power sources which drive the vehicle. One is electric the other is an Internal Combustion Engine (ICE). One of the wonderful benefits of this car is that, due to the 2 power sources, you get great gas mileage. There are ways, however, of making optimal use of the Hybrid system to get the best Miles per Gallon possible. The Engine Run indicator kit will tell you when the ICE is running to help you improve your driving technique thereby enhancing MPG's. Unlike the center display, the LED indicator will instantly illuminate whenever the gasoline engine is running in the Prius, even if it is just idling or operating the A/C. Use this information to maximize your fuel economy and to increase the efficiency of your accessories. By careful manipulation, you can increase the time that you car is in the silent or "stealth mode" and thereby increasing your mileage."