Kia debuted the Ray plug-in hybrid concept during a press conference at the 2010 Chicago Auto Show. As part of Kia's EcoDynamics sub-brand, the Ray demonstrated eye-catching styling with a reduced environmental footprint. The experimental vehicle was composed of lightweight and recycled materials, with a flowing profile, flush surfaces and pronounced rear shoulder ending in a slightly high deck lid for reduced drag. Power was supplied by an all-aluminum 153-horsepower Gasoline Direct Injected (GDI) 1.4-liter engine mated to a permanently-engaged fixed ratio CVT, used in combination with a 78kw electric motor and lithium-polymer battery. It was capable of driving distances of more than 50 miles using its electric motor on a single charge, and had a fuel economy rating of more than 202 miles per gallon, with a total range of 746 miles. Based on the Forte platform, Ray was front-wheel drive with four-wheel independent suspension and offered four-passenger seating with hexagonal roof-top solar cells embedded in the glass roof panel.