Interstate Auto Auction is an auto auction open to the public located in Salem, NH. Our public car auctions sell vehicles from dealer trade-ins, repossessions, lease ends, donated cars and more. At Interstate Auto Auction we want you to buy with confidence. You can TEST DRIVE any of the vehicles before the auction!! Feel Free to review our cars online . We also encourage you to read our about us page and our very helpful and transparent FREQUENTLY ASKED QUESTIONS GUIDE which answers over 20 questions that you may have about how we operate.