var menu = new ConsoleMenu().
	Add("Using Linq", () => AveragesUsingLinq(ctx)).
	Add("Using Logic", () => AveragesUsingLogic(logic)).
	Add("Close", ConsoleMenu.Close);
menu.Show();

private static void AveragesUsingLogic(CarLogic logic)
{
	foreach (var item in logic.GetBrandAverages()) Console.WriteLine(item);
	Console.ReadLine();
}