It's funny to me how much sci-fi is either based on actual science, or the flip side, how much sci-fi has become real world science.

-No flying cars yet (but single person drones are rolling out as we speak).
-Lasers (weapons and tools).
-Sensors (long distance scanning)
-Miniature drones (weaponized, surveillance, mapping, etc)
-Artificial/mechanical limbs
-Robots (militarized and non)
-AI (doesn't really count because we're a long, long way from it)
-Computerized, voice activated houses
-Personal comuter assistants (give Alexa a few years....and then plug that into a high dexterity robot....)

• Computer driven cars
• Cloning
• Genetic modification (CRISPR technology, oh my!)

We just need some faster than light capability, and off we go! (though I think we'll find that humans just can't live in deep space)