Scott Esplen is all too familiar with the complaints people have when it comes to selling their used cars to dealerships. Interminably long waits, a lack of transparency and ultimately doubts over whether they’re getting a good deal tend to define the experience for a lot of consumers. Three years ago, Esplen – director of used vehicle operations at Humberview Group – decided to automate the process by incorporating TradeRev, an online system that hosts used car auctions in real time.