selecting xml file descendant node using c#

I have xml file which has structure like this

<CarsList>
  <Country>France</Country>
  <Cars>
    <Car>
      <Name>Alfa romeo</Name>
      <Url>/carurl.htm</Url>
      <Place>Marseille</Place>
    </Car>
    <Car>
      <Name>Aston martin</Name>
      <Url>/car2url.htm</Url>
      <Place>Paris</Place>
    </Car>
    ...
  </Cars>
<CarsList>

inside c# code after loading file into memory I'm trying to read all car nodes and store into new object (CarInDetail) using following code

var cars = from c in elem.Descendants("Car")
                select new CarInDetail
                {                   
                    Name = c.Element("Name").Value                
                };

but I'm getting cars as null