F1 champion Michael Schumacher's old F1 car up for auction

An historic Formula 1 car driven by world champions Michael Schumacher and Nelson Piquet is set to go under the hammer.

The 1991 3.5-litre Benetton-Cosworth Ford B191 was driven to victory by Piquet at the 1991 Canadian Grand Prix, and was also raced by subsequent seven-time world champion Schumacher during that season's Japanese and Australian GPs.