One fast hybrid. The 918 Spyder will do a reported 0 to 60 mph in about 3.1 seconds.

If you've got a little bit of extra cash lying around, jump on this offer. Porsche today announced that dealerships would be taking orders for the 918 Spyder--and the plug-in hybrid super car will sell for a mere $845,000 in the U.S. (that's 645,000 euros).

The 918 Spyder concept made its debut last year at the 2010 Geneva Motor Show and was also spotted last year at Pebble Beach Concours d'Elegance.

The 918 Spyder design was inspired by the 918 Carrera GT super sports car and the 917 and RS Spyder race cars. Like the 2010 concept car, the production version will be made from a carbon fiber-reinforced plastic monocoque. However, the production version will have a manual roof system with removable panels that can be stored in the front luggage compartment, Porsche said.

The speedy hybrid will do 0 to 60 mph in about 3.1 seconds, with a top speed of 199 mph. As previously reported, the 918 Spyder will be powered by a unique plug-in hybrid system that includes a high-revving, mid-mounted V8 engine with a capacity of more than 4.0 liters and producing at least 500 horsepower. Two electric motors--one each on the front and rear axles--together produce additional 218 hp.

The 918 can run on gas, electric power, or a combination. It has an expected electric-only driving range of about 16 miles on the New European Driving Cycle. Charging will differ in each country, but it is expected to take about seven hours at 110V/10A in the United States.

Porsche will build 918 units beginning September 18, 2013, at the company's Stuttgart-Zuffenhausen factory. The units will arrive in the U.S. near the end of 2013. Official EPA fuel economy figures or estimates will be announced just before the first units are delivered, Porsche said.