Well the most important thing to remember is the car is sold as is. So make sure it is in good shape because any thing that needs to be fixed won't be under warranty. If pays to bring a car expert along to find any defects.
As far as i think you first have to decide about your range to buy a car for your son, Then you have to decide that what car did your son exactly interested in and then go to any auction.
The vehicles sold a a seized car auction are sold in as is condition. The engine and transmission may have been submerged in water and require immediate attention.
