I have heard Mark speak twice at two seminars. The first time was almost 20 years ago, and the second time was years later. Both times were excellent. I still today use what I have learned from him everyday in my business. At the time I was starting out in the car business, and since my family has got into the car business. We now have several franchise dealerships in 3 states. I know I would not be where I am today without the help I received from Mark Tewart!!!