Lean Houses for Dragons by Sharon Visser. When Halfway Toyota acquired the Ngami dealership and repair centre in 2013, there were mistrust and fear among staff. The new owners wanted to introduce Lean Thinking but Dealer Principal Sharon Visser met fierce resistance at first. Through her humble leadership and determination to make respect for people a key element of life in the organization, she eventually won over naysayers and kickstarted an incredibly successful lean transformation.