If i could use any future scientific technology that does not exist at this time it would be a flying car with a juice bar built in. And i would pick that because instead of waiting in traffic at a red light you could just press a button and out would pop your wings and you could just fly over every one that was in your way. the juice bar i think would just be something cool to have in a car. you could tell someone, "comeon lets go drink some juice in my flying car!" how cool would that be!!!!