Levying a surcharge on owners of several vehicles would not only be hard to implement, it would also make it harder for people who need a car to get one, said observers yesterday. SMU Associate Professor of Law and NMP Eugene Tan added that it was unclear that a surcharge would "contribute significantly to more reasonable COE prices". A surcharge with loopholes could raise public anger when people see others getting around it, he said. Still, those who feel owners of multiple cars should pay more will be disappointed. "There will still be a sense of unfairness."