A permit to own a car

​A permit to own a car     
In most countries in the world you can buy a car if you have money. In Singapore you first need a permit to own one. Admitted: usually a permit – a Certificate of Entitlement or CoE – is bought together with the car but still the principle remains the same. Essentially the demand for cars is made to match the supply of roads (which is inflexible by nature) .
Not a bad idea. Or is it?
 
What say you? We welcome your ideas, links and feedback.
 
The Neighbour