Lamborghini V12 discontinued their first-generation V12 after the Murcielago, opting for a brand-new V12 that first saw use on the Lamborghini Aventador. When Ferruccio Lamborghini set out to compete with Ferrari, he contracted Giotto Bizzarrini to design the engine for his car and, according to some accounts, paid him a bonus for every horsepower over what Ferrari's V12 could produce. The finished V12, with minor improvements, went on to become the 6.5 litre powering the Lamborghini Murciélago LP 640, and completed its service for Lamborghini with the final version of the Murciélago, the Murciélago LP 670-4 SuperVeloce. The engine was designed from
Sunbeam Motor Car Company the LSR in a new 4-litre V12 Sunbeam racer originally named Ladybird and later renamed Tiger. Coatalen decided to re-enter the LSR field himself, building the truly gigantic Sunbeam 1000HP powered by two Matabele engines. On 29 March 1927 the car captured the speed record at . The car is now at the National Motor Museum, Beaulieu, UK. A later land speed record attempt, with the 1930 Silver Bullet, failed to achieve either records, or the hoped-for advances in aero engines. It is now almost forgotten. Rootes was an early proponent of badge engineering, building a single mass-produced chassis and