What do you do if the engine dies in your car? Put your hazards on and pull over. In your helicopter? Pray you can autorotate to a field.

We've had actual flying cars too, though they were really just car shaped quadcopters and never made it to mass production because they sucked as transportation.

Gyrocoptors. They're closer to a flying car, since if you can drive a car, you can legally fly a gyrocoptor in the US. Just remember to file flight plans, and watch out for power lines. The way you land the things is to kill the engine.

Helicopters aren't cars. But actual flying cars have indeed existed for at least ten years. I'm too lazy to go find this segment I watched on the topic, but I remember seeing one.

Honestly the older ones with the wings from the 40s are probably less “kill you if something goes wrong” than anything today.