A Porsche 928 featured in the film “The Risky Business” will go up for auction at Bonhams cars in America next week. The German coupe comes with a 4.5-litre V8 that produces 230bhp and features a five-speed manual gearbox, four-wheel independent suspension and disc brakes all around. What makes this Porsche so special is that it was reported to have been used by the film star Tom Cruise who learnt how to operate a manual transmission behind the wheel. A total of three 928s were used for the driving shots in the film, with the one being offered for sale being used for any wide shots with the wh…