sentences:  The company also refused to outsource the game to another developer, describing that move as "unthinkable".Several other titles were considered, including "Gran Turismo 4 Mobile", "Gran Turismo 5 Portable", and "Gran Turismo Portable".The title "Gran Turismo Spyder" was also considered, but was dropped as the developers felt that both it and the "Gran Turismo 4 Mobile" title did not represent a "fully-specced Gran Turismo".