JS Holmes in Wisbech St Mary turned blue on Friday to raise money for research into Type 1 diabetes.
Staff at the Nissan and Ford dealership dressed in blue, held a raffle and played games to raise cash for the Juvenile Diabetes Research Foundation (JDRF).
It was part of a partnership between JDRF and the UK branch of Ford, which aimed to raise £100,000 for the charity in 2011 to mark the centenary year of Ford in Britain.
It was continuing a long tradition of raising money for JDRF. The first fundraising event took place in 1983 when the great-grandson of Henry Ford started supporting the charity because his son was diagnosed with Type 1 diabetes.
There was also a personal link for JS Holmes, as company director Nobby Holmes has diabetes.
Type 1 diabetes develops when the insulin-producing cells in the body have been destroyed and the body is unable to produce any insulin. This leads to a build-up of glucose in the blood.
It can develop at any age but usually appears before the age of 40, and especially in childhood. It is treated by daily insulin injections, a healthy diet and regular physical activity.