Was wondering if anyone had any experience running a used car lot, specifically the finance aspect of it - using a 3rd party finance company to help finance customer purchases vs. financing it through the used car business itself, and the paperwork required by law to complete such transactions.

I'm thinking of this for a long-term goal. I am familiar with the automotive part of the business but have no experience with the legal or finance/sales aspect of it. I'm starting a business plan now that I can hopefully perfect over the next couple of years, so any input is definately appreciated.