What is Biff's idea of the American Dream? How does he try to make that dream reality?
I'm not sure that Biff has an idea about the American Dream. It is clear that he has a dream for his life and it is the direct results of his life with Willy. Biff wants to get away from Willy's idea of the dream; he wants out of the office, out of selling --- he says he wants to work outdoors where a man belongs. But I don't know if this is a dream or his reaction to what he learned about the illusion that Willy lived in. It isn't so much a "dream" as the reaction to what he saw as a "nightmare."