1. With a used car auction, the single biggest issue is - no surprise - trust. Therefore VINs (Vehicle Identification Number) and current title transfers are MUSTs. Without them, you won't sell a skateboard.

1. Classic car auctions are somewhat different. These aren't folks looking for dependable family transportation. Their numbers are smaller but they are passionate about their cars. There is a dual function for classic car auctions:

* Sell any that you own for a nice profit

* eBay Motors is a great place to acquire new stock. Folks who like to work on old cars can often acquire real bargains that can be repaired and sold. Caution: this only works if you want to do the work yourself. Generally, there isn't enough room to pay a mechanic - and still make a profit.

3. Truck auctions are a very different game. There is no emotion here. Almost every buyer is interested in a truck as a functional vehicle and so the emphasis isn't really on selling. Instead, focus on specifics about the truck, since most buyers already have a clear picture of what they're looking for and have already 'sold' themselves.