Flying 2-3 feet over the ground needs as much energy as flying thousend feet over the ground. But it could be done if you coat all streets with a magnet and make the bottom of the car magnetic aswell. There is only one problem the car would flip over like the flying magnetic bed. which is hold by tethers in position. For the car to hover you would need another track above the car which is also magnetic and ofcourse on the sides. So practically the car needs to be in a magnetic tube and look like a bullet.
I am sorry there will never be a cool flying car outside of virtual reality. On earth that is. On Moon or Mars it would be easier.
never say never. There's actually been several atempts at making flying cars since the 50's,but none of those attempts have been pratical. It's the same reason that nobody wants hybrids,people don't want to change the way things are. They don't want to change what they know.
Never say never is a true statement for a lot of things. But in this particular case it is safe to say never. Again I am refering to Back to the future cars. A flying car with wings or a rotor or a jet turbine under the floor powered by a nuclear reactor is entirely possible. But this is not what the people want. What they want is impossible with our gravity. It is physically impossible. We have a levitating Train already the Transrapid but it levitates millimeters above the track and needs tons of highend technology to not be pushed from the tracks.
The electromagnetic approach would be hard because the cars would slide down from the magnetic field also we would need hundreds of TRILLION Dollars to convert the streets technologically to offer a super strong EM field. Also we would need energy a lot of it magnitudes over the current worldwide need just to power the streets. And what we would get is cars levitating 10 inch above the floor heavy as hell. Not one advantage no flying in different levels no leaving the streets. nothing Also it would destroy our Iphones/Notebooks and stop communication over phones because the magnets would influence every speaker next to a street. And people so paranoid about unhealthy EM fields would go nuts if every street has a Million times stronger EM field then earth has.
For flying cars which are economically useful and offer all the desired SCIFI advantages like flying were you want in a car like shape flying in different levels to never get in a jam. To have a smooth driving experience without loosing your hearing. To not kill or destroy everything beneath you and relie on a Plutonium powered car. There is only one solution: that is creating an Antigravity like field under the car.Nobody has seen a force that acts accordingly. Not here not anywhere else in the Universe. Its not even sure that gravity itself is a force.
Maybe there is a Higgs field and we learn to manipulate it. Lets say there is a possible way just for the heck of it.
The ability to manipulate the quantum world in a way to switch gravity on and off as we please to bend space as we please means we can manipulate everything else. Which would make us gods. Flying cars on moon are possible not on earth.
There is no possible/practical approach. There just isnt, I already checked. And there never will be the consequences of doing that on earth would mean we dont need cars anymore.
http://www.techdirt.com/articles/20110707/02133114992/flying-car-already-cleared-skies-now-cleared-roads-too.shtml --- what do you think of some simple concept like that. I'm no expert in any of this,but I have to disagree with some of what you said. What people thought impossible 100-150 yrs ago is now possible. there might not be a possilbe/practical apporach now so to speak,but maybe no one has discovered one yet. I can only imagine what's going to be possible in another 100-150 yrs from now.
Your link refers to a roadable aircraft. I already said I am not talking about hybrids of aircrafts and cars. I am talking about Back to the future flying cars. You saw that movie ?
100-150 years ago our physics were flawed and incomplete today we are very good at them and with proof that our laws are correct. This particular thing: Flying Cars like Back to the future will NEVER exist because its simply not possible. Nobody will ever find a way. If we find a way we can also break the lightspeed barrier and disolve blackholes ,disintegrate Planets and be masters of time. Again I refer to limitless flying compact cars that stay effortlessly in the air. Some kind of flying car is possible but not the cool kind were you can start from the spot fly everywhere for longer then 1 Minute with moderate noise. Sure we can build a a mini harrier jet that looks like a car and flies for a few Minutes but nothing useful.
Physics dont allow it or if you will GOD doesnt allow it. There are a few natural laws that just wont make it possible. Again I refer to cars like Back to the future and fifth Element with the same abilities as those cars. Not aircraft car hybrids which will never be mass market ready because they are far to cost intensive and need a pilot license. Also too loud or too big to replace real cars. Those "cars" are around for decades have you ever seen one ?
I wont discuss this further unless someone shows me a credible theory how to make it possible without breaking the laws of nature. Again-> like in Back to the future.
of course I've seen that movie. that's my favorite trilogy of all time. Stop being such a debbie downer. I can gurantee you if somebody put there mind to it,they could find a way to come up with a credible theory to make a back to the future type car possible. Somebody could make time travel possible. If everybody thought like how you think,then nothing would get invented,there would be no break throughs in anything. I believe were there's a will,there's a way. I also don't believe in a god. I also did'nt say aircraft hybrid cars have been around for decades,I showed you a link,were people have attempted to make/design something like that since the 50's.
I am not a Debbie Downer the difference between you and me is I know some Physics. I believe someone will sometime come up with a Matrix/Holographic Projector/ Robot / Nanobots/ A Space lift/ A station on moon and mars/Terraforming/Quantum Computer.Mining Asteroids in Space/ Fusion/ Plane-Spaceship hybrids/300 year+ old humans. All this could happen in next decades/centuries.
Also Time Travel into the future is already solved no problem here Time Travel into the past impossible and never will be possible.
You simply dont understand the implications of flying cars on earth. The same technology that allows cars to fly on earth like seen in Back to the future allows following things too: Manipulating Gravity of Planets to make them fall apart. Destroying Singularities by manipulating the mass of blackholes. Making a Spacecraft as light as a a Photon and breaking Lightspeed barrier thus making Time Travel into the past possible. Moving around stars and the galaxy if wished.
To have a flying car like Back to the future means manipulating gravity at will. And the fact its a car means its easy and cheap to do that the implications of that are we would have full control over everything. We could make own planets our abilities would be limitless.
I said car/aircraft hybrids were around for decades. I never said you said it. I also think were there is a will there is a way but there are limits to that. You can jump out of an flying aircraft from 10000 feet naked with the iron will to survive but there is no way you will survive.
Not everything is possible not everything can be done. Because there are rules humans and everything else has to follow. A lot can be done but not flying cars like in back to the future. I also wished for that since ever but to my disappointment I found out that a few natural laws are blocking the way.
But ok. No point in discussing it any further. If you think I am a debbie Downer because I believe an impossible Technology will never exist so be it. Maybe you are lucky and UberEinstein comes along the way and finds a way to make everything possible I dont know.