(CNN) Ford unveiled a fully electric Mustang with over 900 horsepower at a car show in Las Vegas Wednesday. It's not for sale, but the customized Mustang is intended to gauge interest in a high-performance electric car, Ford said.

Ford F Later this monthwill unveil a "Mustang inspired" electric SUV that customers will be able to buy. The SUV, however, will likely be far less powerful than this show car, which Ford is calling the Mustang Lithium.

Ford didn't provide any exact performance figures for the Mustang Lithium, but described the car's acceleration as "stunning."

The Ford Mustang Lithium has two clear panels in the hood to allow a view of the parts underneath.

Created together with the automotive parts supplier Webasto, the Mustang Lithium has a six-speed manual transmission. That's unusual in an electric car because, unlike gasoline and diesel-powered cars, electric cars don't actually require a transmission with more than one speed. The transmission in the Mustang Lithium is a special heavy-duty transmission engineered to handle the 1,000 foot-pounds of torque, or pulling power, put out by the car's electric motor.

Josh Lupu, director of marketing for Webasto Customized Solutions, said the manual transmission was included "because it puts control of the vehicle back in the driver's hands." The driver can simply leave the car in third gear all the time and drive it like any other electric car or choose to shift gears.

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