sentences:  It is also alleged that in a conversation about the FW16 between Prost and Senna in early 1994, Prost had said that the FW15C had not consistently been as easy to drive as others had assumed in 1993, exhibiting odd behaviour at times.Being more nervous than the preceding FW14B when driven at the limit this manifested itself in slight rear-end instability under braking, most notable on high speed circuits when the car was operating in a low downforce trim, attributed to small changes in weight distribution from the year before.Other reasons given were that the FW15C, and by extension the FW16, were simply evolutions of the FW14 and FW14B, which had been designed to suit the driving style of Nigel Mansell.