Toyota's hydrogen fuel-cell concept car made its debut to a select group of journalists at the Frankfurt Auto Show. The most prominent of the Japanese automaker's hydrogen concepts, the FCV-R, is expected to be developed into a production vehicle as soon as 2015. The prototype is reported to be based on the Lexus HS 250h platform, which was sold in Japan as the Toyota Sai. The HS platform was taken off the market in the US, but is a good indication of what size Toyota's fuel-cell vehicle is likely to be when in production. It is expected to be around the size of Toyota's Prius, although a sedan is more likely than a hatchback at this point. This size would make it slightly larger than a Corolla, but slightly larger than a Camry.

While the production model of the FCV-R will be priced at the upper end of the range of eco-friendly vehicles, the price point will be comparable to a number of current electric vehicles, a technology Toyota is choosing to forego in favor of hydrogen fuel-cells. The range from 11 pounds of compressed hydrogen should be over 300 miles, which exceeds even the highest-range electric cars. Toyota's research and development has concentrated on increasing the energy density of its fuel cells, allowing the cell to produce more energy from less hydrogen. This also provides more space for batteries as part of a hybrid fuel cell-based system. A 21 kilowatt-hour battery pack helps boost the FCV-R Concept's range. While the focus of the concept car is on efficiency, there is likely to be enough power to make the concept car fun to drive. A version of the car that will eventually be produced should make its appearance at the upcoming Tokyo Auto Show in late November.

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