The car is set to replace...

The car is set to replace the current 607, which is a slow seller in the UK, although it"s more popular in mainland Europe. The 708"s smooth rear has wraparound light clusters above sporty twin exhausts, while the shoulder line dips as it approaches the front of the car, giving the newcomer curved flanks similar to Mercedes" CLS.

But it"s the nose that reveals the 708"s true heritage. Its wide-mouthed grille and distinctive headlamps are taken straight from the 407, while the pronounced bonnet bulge draws from the recent 907 sports car concept.

Although still in development, the 708 shares its underpinnings with sister firm Citroen"s C6, which was unveiled at the Geneva Motor Show in March. Its luxurious interior and huge space for rear passengers give clues as to what to expect from the big Peugeot.

Comfort will be a key selling point, with electrically controlled rear seats and a host of entertainment and communication goodies. As with the Picasso opposite, Citroen"s innovative lane departure warning system is likely to be standard, alongside directional headlamps.

Power will come from a choice of two V6 engines - a 2.7-litre HDI oil-burner or 3.0-litre petrol serving up 208bhp and 215bhp respectively. Each will come with a six-speed auto gearbox. The car is expected to go on sale in 2008.