Located in Eindhoven, designer Wouter Scheublin created this gorgeous stainless steel and bronze toy car.
We don't know much more about it other than it comes in an equally beautiful walnut box, is powered by a spring, and was made in a limited edition of 20. I don't know if any are available, or how much they cost, but his contact information is located on his web site.
If you like this, you might also be interested in the Kikkerland zeCar, which is readily available.
Unlike Scheublin's car, the zeCar is powered by a stainless steel flywheel which is connected to the wheels via a series of gears. A gentle push spins the flywheel and supplies the zeCar with the energy it needs to move. You can choose to have the traction be the front, or the rear wheels. You can also slide it upside-down on the flywheel and two free spinning wheels. Zecar is not a race car. It has lots of torque, and so can move up gentle inclines, but it moves rather slowly. It sells for a very reasonable $13 USD.
[ Thanks Adam! ]