Complex tabbed form with panels in .NET MVC 3 - asp.net-mvc-3

Question

I'm trying to create some complex form scheme in a .NET MVC 3 project (or so I think). I'll show a wireframe so that you can understand better.
As you can see from the pic above, it's a form to create a new Car Dealership. I can choose from many available car's manufacturers (in the Add a tab), and each selection creates a new tab in the panel underneath it. In each panel there's a html fieldset, and I can add some new cars on it.
In the end, I want to submit all the form, which comprehends the data from the dealership (e.g. name), the car's brands that it has and the cars available for each brand. How can I do it with MVC 3? I don't know how exactly should I instantiate the model Car Dealership and its respective View. What should the cars in the panels be? An array of inputs? And how can I separate the inputs from one tab from the ones of another? All of this, using Razor!
My real-world scenario is a little bit more complicated, but I'll start by this so that I can try to solve the rest by myself. I'm using jQuery/jQuery UI, but I'm opened to other javascript alternatives (like Backbone, etc - I just don't know them yet). Thanks in advance!
UPDATE (1):
These are my models so far:
public class CarDealership
{
public int Id { get; set; }
public string Name { get; set; }
public virtual ICollection<ManufactorOnDealership> ManufactorsOnDealership { get; set; }
}
public class Manufactor
{
public int Id { get; set; }
public string Name { get; set; }
public virtual ICollection<ManufactorOnDealership> DealershipsOfManufactor { get; set; }
}
// Junction class: I believe it's needed because the list of Cars belongs to this relationship
public class ManufactorOnDealership
{
public int Id { get; set; }
public int CarDealershipId { get; set; }
public int ManufactorId { get; set; }
public virtual CarDealership CarDealership { get; set; }
public virtual Manufactor Manufactor { get; set; }
public virtual ICollection<Car> CarsOnDealership { get; set; }
}
public class Car
{
public int Id { get; set; }
public string Name { get; set; }
public virtual ICollection<ManufactorOnDealership> Manufactors { get; set; }
}