Vehicle gas DTD .NET objects and XML parsing with LINQ

The code contained below is a rough draft, and will eventually be moved into an assembly, and the code posted.

At some point in 2007 I started keeping track of my gas mileage in an XML file, with a custom DTD for validation (and intellisense in oXygen).

I present below the code necessary to create an rough object from the XML, and the LINQ to parse it out.

C# objects

	public class Vehicle {
		public int Id { get; set; }
		public String Make { get; set; }
		public String Model { get; set; }
		public int Year { get; set; }
		public IEnumerable Fillups { get; set; }
public class Fillup {
    public int Id { get; set; }
    public DateTime Date { get; set; }
    public int MilesTotal { get; set; }
    public Decimal MilesDriven { get; set; }
    public Decimal Gallons { get; set; }
    public Decimal CostPerGallon { get; set; }
    public Decimal CostTotal { get; set; }
    public String Notes { get; set; }


XDocument vehicleGasXml = XDocument.Load(@"C:\path\to\vehicle_gas.xml");

IEnumerable vehicles = from vehicle in vehicleGasXml.Descendants(“vehicle”) select new Vehicle { Id = int.Parse(vehicle.Attribute(“id”).Value), Make = vehicle.Element(“make”).Value, Model = vehicle.Element(“model”).Value, Year = int.Parse(vehicle.Element(“year”).Value), Fillups = from fillup in vehicle.Descendants(“fillup”) select new Fillup { Id = int.Parse(fillup.Attribute(“id”).Value), Date = DateTime.ParseExact(fillup.Element(“date”).Value, “yyyy-MM-dd”, System.Globalization.CultureInfo.InvariantCulture), MilesTotal = int.Parse(fillup.Element(“milesCar”).Value), MilesDriven = decimal.Parse(fillup.Element(“milesDriven”).Value), Gallons = decimal.Parse(fillup.Element(“gallons”).Value), CostPerGallon = decimal.Parse(fillup.Element(“costGallon”).Value), CostTotal = decimal.Parse(fillup.Element(“costTotal”).Value), Notes = fillup.Element(“notes”).Value } };

As always, suggestions appreciated. (Although I've already got code that, using .NET 4, creates some rather nice charts with the information contained within a document such as this, and consider this close to complete; name information isn't grabbed, but I'm not sure that's altogether necessary ...)