10 cool electric cars of the future

Why it's green: Plug-in hybrid.

Why it's cool: Far-out styling, extra "green" features like solar panels.

Hyundai says the Hyundai Blue-Will Concept shows where the company's heading on several fronts, including hybrid technology, exterior design, interior features and the use of futuristic materials. Solar cells power a fan that keeps the interior cool when the car is parked in the hot sun. The heart of the Blue-Will Concept is a plug-in hybrid powertrain. It uses a fuel-efficient, 1.6-liter gasoline engine and an electric motor with batteries that can be recharged with ordinary household current. The company said the Hyundai Sonata Hybrid will have a similar hybrid setup when it goes on sale in the United States later this year, only without the plug-in feature. Eventually, Hyundai plans to have plug-in hybrids.