I can't figure out OOP constructors. Why don't they work?

Question

JavaScript

Now I'm going through OOP JavaScript'a. But for some reason the constructors don't work. The reason for me, as a beginner, is incomprehensible. What is the problem? Here is the code:

<script type='text/javascript'>

function Automobile(color, model, year, manufact)
{
  this.color = color + " " || "white";
  this.model = model + " "|| "A1";
  this.year = year + " "  || "2000";
  this.manufact = manufact + " " || "Toyota";

    function autoInfo () 
  {document.write(this.manufact + this.model + this.year);}

    function autoColor()
  {document.write(color);}
}

function driver (color, model, year, manufact, name, experiance)
{
  this.base = Automobile;
  this.base(color, model, year, manufact);

  this.name = name  + " " || "Vasiliy";
  this.experiance = experiance + " " || 1;

    function driverinfo()
  {document.write(this.name + ": experiance " + this.xperiance + "year");}
}

vlad = new driver ("Red", "Skylane", "Nissan", "Vladislav", 5);
    vlad.autoInfo();
    vlad.autoColor();
    document.write("<br/>");
    vlad.driverinfo();

</script>

Answer 1

driverMethod autoInfo()
B has function driver() {...}no definition this.autoInfo.
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