Breaking Down Means Falling Out of the Sky

A rear view of the 1954 General Motors experimental gas turbine-powered vehicle, the XP-21 Firebird.

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OK, so this particular reason why you don't want a flying car is pretty self-explanatory, but maybe we should go through some possible scenarios just to drive the point home.

Lots of us have been stranded on the side of the road at one time or another. Maybe your car overheated, you ran out of gas, got a flat tire or that weird sound you've been hearing for months but never did anything about actually turned into a major problem. When your car breaks down on the road, most people try to quickly maneuver it out of traffic and get it to a safe place away from everything else. Well if you break down in a flying car, the only option you have is to fall from the sky.

You're still not going to have some Good Samaritan help push the car to the side of the road. There won't be an option to pop the hood and diagnose the problem and you can't just get out and walk a few miles to get some more fuel. Gravity is going to have its way and its way is down. An object, ignoring air resistance, falls 1,000 feet (304.8 meters) in about 8 seconds [source: George]. So if you're 1,000 feet in the air and you have an accident, or your car just stops working, you better have a back up plan you can implement quickly.

Even if you can glide or use some sort of parachute, you're going to have to know how to land your car in an emergency. How much of a runway do you need? Can you just put in some trees? Are there houses around? Breaking down in a flying car seems like a huge hassle, not to mention a serious danger.

But if you're still set on owning a flying car, maybe you should go on to the next page to find out how hard it is to fly in bad weather.