Ideas for selling cars

Hey I know a guy who sales cars wholesale and he suggested to me that if I wanted to earn some extra cash that I could help him sale the cars.

It's sort of like being a finder. I wouldn't work for the dealership, but just gathering potential buyers. When the car is sold then I would get paid.

Not ever being a car salesman before, along with the market being strapped for cash, I was wondering how I could make this work. What kind of ad could I run?

Any ideas or suggestions would be appreciated.

Keir

P.S. The cars usually sale for between 2000 and 5000