'FF' stands for 'Ferguson Formula' and was the product of Harry Ferguson Research set up by Harry Ferguson after his tractor interests were sold. Ferguson wanted to make a four wheel drive car, and his R5 project was seen by Richard Jensen in 1959 and contact maintained. In 1965 a prototype Jensen CV8-FF was made, but the production version would have to wait for the Italian-designed Interceptor, and both the Interceptor and FF were exhibited at the 1966 London Motor Show. Jensen's FF was the world's first four wheel drive car, but there were teething troubles; the FF was designed as a right hand drive car, and the left hand drive cars were compromised in driving positions etc, and therefore handicapped on their largest potential market. The FF II was launched in 1969 with few changes, and when the Interceptor III was launched in 1971 a few FF cars were completed as Series III.