The term 'American Sports Car, FOR' can be completed with two crossword solutions: ALFA (4 letters) and JAG (3 letters). ALFA is an Italian car manufacturer that has been producing cars since 1910. They are known FOR their luxury sports cars, which have become popular in the United States. JAG is the abbreviation FOR Jaguar, a British car manufacturer that has been producing cars since 1922. Jaguar is known FOR its high-performance sports cars, which have become popular in the United States.