/// <summary>
/// Initializes a new instance of the <see cref="DatabaseCars"/> class.
/// </summary>
/// <param name="xDoc">
/// XML doc with cars info.
/// </param>
private DatabaseCars(XDocument xDoc)
{
this.ListOfCars = XmlParser.ParseVehicleInfo(xDoc);
}
/// <summary>
/// Initializes a new instance of the <see cref="DatabaseTrucks"/> class.
/// </summary>
/// <param name="xDoc">
/// XML doc with trucks info.
/// </param>
private DatabaseTrucks(XDocument xDoc)
{
this.ListOfTrucks = XmlParser.ParseVehicleInfo(xDoc);
}