Description The Ferguson P99 was a four-wheel drive Grand Prix car built by Ferguson Research Ltd. It was raced on behalf of the company by the Rob Walker Racing Team. Officially named as Ferguson Climax, it derived its P99 name from its Harry Ferguson Research project number. It used either a 1.5-litre or a 2.5-litre Climax engine. It remains the most famous example of its type as a result of its twin claims to fame: the first AWD car to win a Formula 1 event, and the last front-engined car to win a Formula 1 event.