1. Take pic of your white van.
2. Post pic with description and mileage on craigslist.
3. Don't mention what happened in the back of the van in '99.
3. Get a couple emails.
4. Sell it to the highest bidder.
Who's too stupid to not figure this out and needs a service?
Okay, so they pay you more than the dealership. That's a selling point. But I could find someone on Craigslist and sell it to them for more.
Then you're not the target audience for this. The last time I sold a car via Craigslist it probably consumed 8 hours at least. Multiple test drives, etc. Nowadays I'd let the dealer screw me rather than take that time. This seems like a great intermediate path if it's well run.
Who's too stupid to not figure this out and needs a service?
Okay, so they pay you more than the dealership. That's a selling point. But I could find someone on Craigslist and sell it to them for more.