Ford plans to unveil at this month's International CES gadget show a solar-powered concept car that offers the same performance as a plug-in hybrid but without the need for a plug.
The C-MAX Solar Energi Concept car uses a gasoline engine combined with a gizmo that acts like a magnifying glass to concentrate the sun's rays on the vehicle's roof-mounted solar panels. The automaker says the vehicle's estimated combined city-highway mileage is 100 mpg.
Ford says that by using solar power instead of an electric plug, a typical owner will reduce their annual greenhouse gas emissions by four metric tons.
The company says it sold about 85,000 hybrid or electric vehicles in 2013, including 6,300 units of its C-MAX Energi plug-in hybrid.