Gold Sirrus A mid-engined sportscar that’s rarer than a McLaren F1? Meet the Gold Sirrus, a sportscar designed and built in Surrey in 1991 by renowned Hot-Rod designer Nick Butler. It has a steel tube chassis, a composite body, a targa top, all-wheel-drive, a five-speed manual gearbox and a 3. 5-litre Rover V8. Only two or three were made, depending on who you ask. It’s wild, whacky and really rather cool.