Well the collateral should be shown to public as you are requesting loan publicly not in inbox right?
It will help you to get more lenders to your thread if they found it interested they will fulfill your request otherwise i don't think they are going to give you that big amount.
My collateral is my own car and my business domain name (
www.forex.ci /
www.fx.ci)
Business domain names have no value unless you already have a business running on those domains.
Where are you located? How will you transfer your car to the lender?