Styled by a Russian count for America's first national park.

Old roads, limited funding, heavy traffic, and vulnerable wildlife pose big challenges in the national park.

Toyota has helped install an array of 208 repurposed nickel-metal hydride batteries from Camry Hybrids to power the Lamar Buffalo Ranch at Yellowstone National Park. The system can store 85 kilowatt-hours of energy at a time.

Chris Bruce

Beginning this fall, used hybrid batteries that would otherwise be recycled will get a second life in Yellowstone National Park. 208 nickel-metal hydride batteries are being retired from the Toyota Camry Hybrids they once helped power and will become part of an off-the-grid energy system at Yellowstone's remote Lamar Buf

Winter. That frigid, miserable time of the year where ice, snow and slush coat our roads and salt coats our cars. Why would you ever willingly go for a drive during the winter? Well, perhaps because no one else is going for drives. As CNN points out, winter means that some of the country's best roads have much lower levels of traffic, making a scenic drive an even more relaxing event than it might

Drive a Nissan Leaf to see Teddy Roosevelt's "best idea," and save a geyser in the process?

The National Parks System is protecting the environment in some farsighted ways. Turns out almost 700 pieces of equipment being used by our National Parks employ alternative fuels. The Green Energy Parks Program was started at Yellowstone in 1995 and currently is in effect at 23 parks, including Mammoth Cave. Mammoth Cave uses biofuels in all of its vehicles (everything from tour busses to lawn mowers!) and re