Putting a penalty on anyone willing to sell his asset is basically againt basic human rights, but to curtail own mafia, there should be a limit to number of cars a person can sell in a year,
i have information that one of the prominent honda showrooms in Islamabad has booked two or three City's on the name of each of their employee... more booked by the dealer than public, these would be later sold on a high premium... basically, such unethical practices need to be curtailed