Question: The Volkswagen Concept D was envisioned by the chairman of the supervisory board until what date?
Sentence (from "Volkswagen Concept D"): It featured V10 TDI diesel engine (230 kW/313 bhp at 4000 rpm., 750 Nm torque), 6-speed Tiptronic, 4Motion all-wheel drive, air suspension with adaptive damping, and Bi-Xenon headlamps.
Relevant evidence: No