Yep. Russ is right, from a dealership point of view. You've got to keep with it and have the support and commitment from management.
But, if you're planning on making this service available to dealers, get some really good legal advice and keep a close watch on those auctions!
Another thing to look out for is dealerships bidding up the price on their own vehicles.
Of course they can do that in some wholesale auctions, (and even public auctions, in some states? But not this one.) So they saw nothing wrong with that.
But, if an auction is presented to the general public, and a dealership does this, the Attorney General in a specific state could become *very interested* in those activities.
The dealers who did this didn't realize they were tempting a lawsuit, because they could do that elsewhere. They simply didn't fully understand the legal implications of certain activities in their online auctions. Be sure YOU know what they are, and monitor all your auctions accordingly.
Careful is the key word here

PS: Yep, I know... it's done on E-Bay all the time, but that's E-Bay, with a HUGE legal budget. They can defend themselves or, more likely, settle. Smaller players could get wiped out.