Greg Bell. After more than 15 years, Leading Edge Motorsports has developed into one of the top racing teams and one of the leading kart programs in North America. We have a strong passion for racing ... moreGreg Bell. After more than 15 years, Leading Edge Motorsports has developed into one of the top racing teams and one of the leading kart programs in North America. We have a strong passion for racing results and education, and our success can be seen in the great achievements of our drivers on every level.