Caterham will launch its most extreme Seven yet at the 2013 Goodwood Festival of Speed... 2.3 to 100 suit you?The automaker is celebrating 40 years of its Seven sports car and for 2013 has re-invented the already enviable parameters of its iconic model with the Seven 620R.The car is powered by a supercharged two-litre Ford Duratec engine capable of 231kW - and of propelling the car from 0-100km/h in less than 2.8sec. Top speed is 250km/h.'MOST HARD-CORE SEVEN YET'The car will cost the equivalent of R746 000 and, the automaker says, takes over at the top of the Caterham catalogue from the legendary Superlight R500.Caterham Formula 1 driver Charles Pic and reserve/GP2 driver Alexander Rossi will drive the 620R in the grounds of Goodwood House in southeren England.Caterham Cars chief executive officer Graham Macdonald said: “The 620R is the most hard-core production Seven yet built for the road. The R500 claimed its place in motoring history as a benchmark for light sports-car performance but this new vehicle pushes the boundaries even further.“While I wouldn’t necessarily recommend this car for those inexperienced in driving Caterhams we always ensure that even our fastest cars retain the manageable delivery of power that makes them accessible, despite the daunting statistics."'EXTREME PIECE OF KIT'The car has a unique metallic chassis, an air-flow optimised nose and a race-tuned cooling package. De Dion rear suspension and wide-track front suspension units are complemented by high-performance dampers. The car sports 13” alloys fitted with track-inspired Avon ZZR tyres.Inside, there are more noticeable improvements such performance-tuned instrumentation and ergonomic controls. The interior has many carbon-fibre elements, among them console panels and the race seats.Macdonald said: “The Seven 620R is an extreme piece of kit. We know there is a demand for cars that re-write the rules of performance and, if you’re brave enough to take it on, the 620R will be an enormously rewarding, fun car to pilot.”A slightly less hard-core ‘S’ pack, which harnesses all the power of the 'R' but offers a little more accessibility, will be launched later in 2013.