I use Asp.Net MVC. I have 4 dropdownlist in my page.

1- Car Company (40 items)
2- Model (30 items)
3- Year (20 items)
4- Engine(20 items)

when user select this item go to details page.In details page i want fill ddl and select item user was selected.

I have some ideas about this but i am not sure its right way.

1- post dropdownlist to controller and return back to detail page

2- write dropdownlist to cookie 

or any other ideas ?