At the Detroit Auto Show, Hyundai unveiled its new hybrid car technology called Blue-Will. This new hybrid system has 152-horsepower 1.6 liter gasoline engine and 100 kilowatt electric motor powered by a lithium polymer battery. It operates similar to the Toyota Prius where it uses electricity at low speeds and the gas engine kicks in for more power when needed. The estimate gas mileage is at 50 to 55 mpg. Other features area a solar cell sunroof, a thermal generator that converts heat from the gasoline's exhaust gases into electric energy to help power auxiliary systems. This new hybrid car system will first be used on Hyundai Sonata which will be in the market later this year.