Do you think that there will ever be levitating cars (just like in the

[SpaceBoy360t1]

Sci-Fi movies) on planet Earth? Since Earth's mass is 5.9736×1024 KG and the normal gravitational pull of which we experience on Earth is 1 G, then does it mean that in order for us to have levitating cars, we must come up with a material that is strong enough, but that is light enough to not be affected by Earth's gravity, in another words, that material's mass would have to be smaller than Earth's mass, and thus meaning that that material will simply levitate, just as the slow fall of a leaf that is falling from a tree, but only imagine that material to be much lighter than a leaf, but as strong as steel. So do you think it's possible to come up with that type of material, and if so, when might we?
And might nanotechnology play an important role in developing that type of material?

 

[DVOTA]

It'll happen eventually. We should be more worried about what's going to fuel our transportation rather than how cool we can make it look.

 

[Rowan]

*facepalm*
GRAVITY DOES NOT WORK THAT WAY!

The only way you could make something not be affected by gravity is by giving it zero mass. That's impossible, and even if you could somehow give things negative mass, flying cars would be a complete waste of it, since that would also allow interstellar travel. Which is actually useful, unlike a sci-fi flying car.

The way light things float is by being lighter than air, so they float in the air like a boat floats in the water. And it'd be impossible to make cars that do that, because people and fuel and stuff weighs so much, that the car would have to be huge. Because it would basically be an airship.

Anyway, a sci-fi flying car would be pointless. If you're rich enough, you can buy a helicopter. A flying car would have the exact same problems as a helicopter. So if you want a flying car, and don't have a helicopter, just think about why. And that's why you won't get a flying car.

They'd be expensive and difficult to fly, is why.