This is the very first Bugatti designed by Giugiaro, the concept also shared some of the styling cues with the EB 110 production model. It had a mid-mounted 3.5-liter V12 engine with four turbochargers and all-wheel drive. It received a set of retro-flavored wheels as a nod to the 1926 Royale.
The ID 90 featured a very elongated glass dome contained within a single rounded curve to achieve the correct aesthetic balance between a sports car and deluxe saloon. This Bugatti ID 90 would eventually evolve into the Nazca M12, Nazca C2 and Nazca C2 Spider, supercars that could have become the descendants of the BMW M1.