[jQuery] Accessing elements returned by clone

[voltron]

How can I access  the elements returned when using clone and
manipulate them? I would like to change the Ids of the clone elements
and siblings before appending it to another element.

Example

<div id="allcars">
  <div id="carselection">
    <select id="cars">
        <option value ="volvo">Volvo</option>
       <option value ="saab">Saab</option>
       <option value ="opel">Opel</option>
       <option value ="audi">Audi</option>
  </select>
    </div>
</div>

JS

$("#carselection").clone().appendTo("#allcars");

I am cloning #carselection

Thanks