Nissan Motor unveiled its latest GT-R high-performance sports car Tuesday, with CEO Carlos Ghosn calling it the fastest GT-R model ever made.To be sold as the flagship of the Nismo brand of premium sports cars, the new GT-R Nismo features a high-performance engine tweaked for a maximum 600 horsepower and an aerodynamic design that keeps the car stable even at speeds of 300kph.Nissan said it will release the GT-R Nismo in Japan at the end of February at a price of 15,015,000 yen ($148,841) and follow that up with sales in Europe and the U.S.(asia.nikkei.com)ANN.Az