One of the tools to control is a transparent way of collecting an eligibility fee to obtain a certificate of entitlement. The prices of cars are quite exhorbitant! Fuel prices are not cheap either. Of course, Singapore can boast of a good public transport.
I was surprised to see fancy car showrooms though. For such a small auto market especially.
Car is a status symbol perhaps in an evolved society like S'pore, like most other markets. Of course, we get to see most high-end cars in the island-country, but without any scratch and quite well maintained & cleaned.