Is it possible to serialize a .NET object in XML without the type as the element root?

Question

Suppose I have a collection in a class that I'd like to have serialized to XML:

[Serializable]
public class DriveReport : IXmlSerializable
{
   public int Capacity { get; set; }
   public int FreeSpace { get; set; }
   public char DriveLetter { get; set; }

   //Assume that the appropriate IXMLSerializable methods are here, where
   //the output to the writer concatenates the DriveLetter to the Capacity
   //and FreeSpace members, creating an element such as <CFreeSpace>...</CFreeSpace>
}

[Serializable]
public class Report
{
   [XmlElement]
   public List<DriveReport> DriveReports { get; set; }
}

And suppose I want my XML to have the following output:

<CCapacity>...</CCapacity>
<CFreeSpace>...</CFreeSpace>
<DCapacity>...</DCapacity>
<DFreeSpace>...</DFreeSpace>

If I don't inherit from IXmlSerializable, what I end up with is an element wrapped around those properties i.e.

<DriveReport>
   <CCapacity>...</CCapacity>
   <CFreeSpace>...</CFreeSpace>
</DriveReport>

Is it possible to emit the previous XML without using an IXmlSerializable implementation in the Report class? And to make things perhaps a little easier, I'm only interested in the serialization, not the deserialization.