c# - Classes with Collections as Properties vs. Classes Inheriting Collections

Recently I used a class that inherits from a collection instead of having the collection instantiated within the class, is this acceptable or does it create unseen problems further down the road? Examples below for the sake of clarity:

public class Cars : List

instead of something like:

public class Cars
{
 List CarList = new List();
}

Any thoughts?

Answer

The problem with this is that your Cars class will still have the interface it inherits from List, which may allow operations you don't want.