Sbarro built a Gullwing with a more powerful 6.9-liter Mercedes engine. But here, to add power to a 5-liter Mercedes V8 engine, the simplest way to put it was to add two turbochargers. The engine now develops 350 hp. By way of comparison, a contemporary Ferrari 308 GTSi developed 240 hp, while a Porsche 928 S was rated at 310 hp! The theoretical top speed was over 270 km/h.

The Biturbo's bodywork has nothing in common with that of the Shahin. Everything is specific, even if there are family features, such as the gullwing doors, of course, the grille with horizontal bars masking the double headlamps and the striations running along the rocker panel. The interior is entirely covered in white leather and includes a high-end audio system and telephone. More surprising is the pink tint framing the windshield. A new way of looking at the road...

A short article in the June 2019 Classic and Sports Car magazine (August 2019 for the French edition reproduced above) mentioned the presence of the Biturbo in a junkyard in Jeddah, Saudi Arabia. Unfortunately, the photograph alone leaves us in doubt: the entire front end of the Mercedes in the article is original. We can't see if the windscreen has its pink edging. A profile view would be more telling to see if the bodywork is indeed that of the Biturbo.  That said, it's quite possible that it is the Biturbo. As for the fact that it's in a scrapyard, that wouldn't be surprising. There are many examples of abandoned luxury cars in the Middle East. The car referred to in the press would have been salvaged for restoration. Perhaps we'll see it again one day?