FW15D chassis 11 - Ayrton's test chassis - This modified 1993 FW15 was used by Ayrton during the 1993-94 winter while the 1994 FW16s were being built.
Ayrton needed a greater radius steering while than the FW15 drivers (Hill and Prost) while caused buffeting against the cockpit. For this reason the forward cockpit section has been cut away,exposing the driver's hands when at the wheel.