Another replica was built and finished in July 2014 by hospital worker and jeweller John Rothwell from Cambridge. It is based on a Reliant Rialto chassis and took approximately 3 years to build in a small garage rented from the local council. Having a three-wheeler based chassis makes this car unique and also disqualifies it from being a genuine replica. This version of Chitty was used by a local car insurance company for a promotion campaign and is frequently taken to local car shows where it helps to raise money for Addenbrookes Hospital Charitable Trust.