One wish

A man is walking down the street when he stumbles upon an old lamp. Giving it a rub a genie appears and says to him, "I will grant you one wish, what will it be?" The man thinks then says "Well, I've always wanted to go to Hawaii but I get sea sick and I'm too afraid to fly over all that water. I wish there was a bridge there so I could just drive over!" The genie replies "No way! Think of how much material that'd be! How about something else?" The man thinks again and comes up with another idea. "You know, I've always wanted to know how women think. What they feel and their emotions and dislikes. I wish I could understand women!" He grins and looks at the genie expectantly. "Two or four lanes?"