Citroen C-Buggy set to bounce in

The space-age conveyance pictured alongside is Citroen's C-Buggy concept, scheduled to be unveiled on May 26 at the Madrid motor show.

Although it's not a precursor to a production model, the twin-chevron brand's design study does provide clues to technology and styling cues that will grace upcoming Citroen models.

Arguably the most interesting innovation is a new 125kW HDi turbo-diesel engine that's slated to appear in the next-generation C5. The four-cylinder powerplant differs from existing diesels in that it uses two turbos (rather than one) and a new injection system to boost flexibility, driveability and fuel consumption, according to Citroen.

The powerplant is mated to a six-speed electro-hydraulic gearbox that's soon destined for the funky C4, which is currently offered only with a five-speed manual or four-speed auto. What's not yet clear is whether the new transmission is a dual-clutch system, as per Volkswagen's excellent DSG.

Visually, there's some clear links with the C-AirPlay concept that bowed at this year's Bologna motor show. Note, particularly, the see-through panels in the lower sections of the doors that are designed to "increase the sensation of speed".

But where the AirPlay had a sliding glass roof, the C-Buggy dispenses with a lid altogether -- perhaps because it doesn't rain in space. The vehicle is billed as having "off-road credentials" and comes equipped with a sump guard -- clearly, not all planets have roads as smooth as ours.

Expect the frontal styling and overall proportions to point the way to the next-gen Pluriel and, possibly, an upcoming compact soft-roader.

The other key attraction on Citroen's stand at the Madrid show will be the C4 Citroen Sport, which is said to be a forerunner to the C4 WRC that the defending world rally champ (and leader in this year's title chase), Sebastian Loeb, will drive next year.