The PAL-V company of the Netherlands have done it!

The PAL-V-One

Introducing the PAL-V One, this really is a car that can fly or a aircraft that can drive.
This futuristic looking car is said to be hitting the consumer market by 2014.  The PAL-V is a car and a gyroplane combined, capable of both an air and ground speed of 112mph and a sub 8.0sec 0-60mph time. It 
can be flown in Europe with a Recreational Pilot Licence or a Private Pilot Licence, while a standard driving licence is all you need to take the PAL-V out on the roads. This is one to keep tabs on, find out more at the PAL-V Wesbsite.