Emerging technology can charge a car?s battery via body or roof-mounted solar panels.
The “translucent solar roof” is the first system of its kind for internal combustion engines.
Hyundai and Kia say the solar charging systems will help reduce harmful CO2 emissions. 

Hyundai and Kia will implement solar charging technology on certain Hyundai vehicles as early as next year. The electricity-generating solar panels, on either the roof or hood, will provide additional electrical power to increase efficiency and reduce CO2 emissions.
Hyundai are Kia are developing three types of solar roof charging systems, known as “generations.”
Generations One & Two
The first-generation solar roof system, applied to hybrids, includes roof-mounted silicon solar panels. The panels can charge 30 to 60 percent of the battery per day, depending on weather conditions and the environment. By contrast, the second-generation “semi-transparent” roof system pairs with internal combustion engines. Unlike the first-generation system, the semi-transparent solar panels fit a panoramic sunroof. The idea is to maintain “transparency” while charging the battery. This way, drivers can still enjoy having the views a panoramic sunroof provides.
Hyundai and Kia say solar charging systems will help vehicles reduce CO2 emissions. Photo: Hyundai Motor Group.
Solar Lid
The third-generation, or “solar-lid” system, is undergoing a pilot study. Hence ...