The SLS AMG Mercedes gull-wing sports car finally officially released. AMG Mercedes-Benz official internal alterations department developed its own new gull-wing sports car of the 20th century 50 years Mercedes-Benz 300 SL gull-wing sports car’s successor, also SLR replacement, will at next week’s 2009 Frankfurt Motor Show was officially unveiled. 2010 Mercedes-Benz SLS AMG will be on sale early next year.