Flying cars
The Fifth Element is one of those movies that took place in the future. It was filled with gadgets that, at that time, no one probably thought we’d see anytime soon. Some of those technological advancements are not available to us today. However, inventors are working on flying cars and hopefully, we will have one soon.
Actually, one of the X-prize challenges:
https://en.wikipedia.org/wiki/Tricorder_X_Prize
#9 thats not the only thing about that movie that already exists
stun gun